SI BEST TEAMS IN ARKNIGHTS ENDFIELD 1.6
Table of Contents
Si’s best team is Si in Team Position 1 with Xaihi, Arcane and a Cryo carry. In Heat accounts, put Laevatain in slot 1 and Si behind her. Slot 1 decides both her infliction element and who gets her combo cooldown cut, so it is the first choice you make with her. She headlines Endfield 1.6 from October 15 to November 5, 2026.
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This post covers the six teams worth building around her, who goes in slot 1, and what to avoid. Her full kit is broken down in our Si operator showcase post, her gear and weapons in the best Si build guide, and the three official demo teams come from the Sanctuary of Ink recap.
How we built this list. Kit numbers come from her skill tables in the game data, at Skill Rank 12. The Cryo team order comes from post-launch community rotation testing that ran each team through a full rotation and compared total damage, calculated without the stagger multiplier (Contingency Contract rarely lets you stagger an elite or boss), so those totals should only be compared with each other. The Heat teams have not been compared yet and are still built from her kit, the three teams the developers played at the 1.6 livestream, and the r/Endfield and r/ArknightsEndfield team threads, credited where used. Checked October 17, 2026, on Version 1.6.
TL;DR - Key Points
- Slot 1 is the whole decision. Her battle skill copies slot 1’s element, and her ultimate cuts slot 1’s combo cooldown.
- Si in slot 1 is the Cryo setup: her own combo comes back fast enough for two Ink Lung attacks in a row.
- A Heat carry in slot 1 turns Si into a Heat applicator and gives the carry the cooldown cut. Laevatain is the obvious pick.
- Never waste slot 1 on a short combo. Last Rite’s combo cooldown is 9 seconds; Yvonne, Arcane, Camille and Wulfgard sit at 20.
- Her combo eats your carry’s reactions. It fires when Cryo or Heat infliction is consumed or absorbed, which is exactly what Last Rite, Yvonne and Laevatain already do.
- Highest tested Cryo team: Si, Last Rite, Will Arcane and Xaihi, just ahead of the Si-carry team (Si, Tangtang, Arcane, Xaihi), where Si deals just over half the damage.
- Artful Intent is boss and wave insurance. Stored damage comes back as Fixed DMG that ignores DEF, RES and damage reduction, and the Inksoul reaches bosses that teleport away.
- Skip her for Physical, Electric and Nature teams. Her Amp only covers Cryo and Heat.
What Si Brings to a Team
Four things, in the order they matter for team building:
- Team-wide Cryo Amp and Heat Amp from her ultimate, No One Spoils the Fun. This is the support half of her kit, and it is why she belongs in Cryo or Heat teams and nowhere else.
- A combo fed by your teammates. Fully Envisioned triggers when an enemy’s Cryo or Heat infliction is consumed or absorbed, and the final hit grows with the number of stacks used. Teammates who consume four stacks at once make the Ink Lung a real damage source.
- Artful Intent. Her battle skill marks a target and records part of the damage it takes. When the mark expires, the total hits a large area as Fixed DMG. The developers said at the livestream that this burst ignores DEF, RES and damage reduction.
- The Inksoul. Recast her battle skill to pull a proxy out of the marked target. Damage and effects that hit the Inksoul also hit the host, so you keep damaging a boss that has moved away. An area attack that hits both only counts once, per the developers.
What she does not bring: healing, shields, or Physical, Electric or Nature support. Every team below still needs a sustain slot.
Si’s Kit in Numbers
Values at Skill Rank 12, from her skill tables:
| Skill | Cost and cooldown | What matters for teams |
|---|---|---|
| Battle skill: Brushwork Realm | 100 SP | Immobilizes for 1 second and applies Artful Intent for 20 seconds. 13% of all damage the target takes is stored and released as area Fixed DMG when the mark ends |
| Initial Stroke (recast) | 15 SP | Pulls the Inksoul out of the marked target. It shares the host’s HP, debuffs and infliction, and the recast reaches the target from any range |
| Final Stroke (recast) | Free | Ends the mark early and releases the stored damage at once |
| Combo: Fully Envisioned | 15s cooldown | 750% ATK plus 100% per Cryo or Heat stack consumed or absorbed, and 10 Ultimate Energy back |
| Ultimate: No One Spoils the Fun | 80 Energy, 30s cooldown | 500% ATK, then 36% Cryo Amp and Heat Amp for the team for 12 seconds, and up to 20 seconds off slot 1’s combo cooldown |
Because the stored damage has already been through every buff and debuff on the target, Artful Intent works like a separate 13% damage multiplier on a single target, plus a free copy of it on anything standing nearby. The Inksoul is quality of life: it gives a mobile boss a stationary stand-in.
Two control tips from launch-week play: you can cancel her combo the moment it starts when she is your controlled operator, and dodging or casting her ultimate does not cancel it. Final Stroke is worth using whenever the stored damage is already enough to finish the target.
The Slot 1 Rule
Two parts of her kit read “the operator in the first position of the team”:
| Slot 1 | Si’s battle skill applies | Combo cooldown cut goes to | Use it for |
|---|---|---|---|
| Si herself | Cryo infliction | Si (two Ink Lungs in a row) | Cryo teams, Si as main damage |
| A Heat operator | Heat infliction | The Heat operator | Laevatain and other Heat carries |
| Any other element | Cryo infliction | That operator | Cryo teams with a long-cooldown teammate in slot 1 |
The third row is a real option, but pick the operator by combo cooldown. A cooldown cut is worth the most on a combo that is slow to come back:
| Operator | Combo cooldown |
|---|---|
| Xaihi | 8s |
| Last Rite | 9s |
| Laevatain | 10s |
| Tangtang | 14s |
| Si | 15s |
| Yvonne, Arcane, Camille, Wulfgard | 20s |
Cooldowns are base values from our rotation bottlenecks data, before potentials. That makes Yvonne, Tangtang or Arcane the slot 1 picks for Cryo teams; Arcane is Nature, not Heat, so Si stays on Cryo. Last Rite is the operator not to put there, a point several players raised in the r/Endfield Last Rite thread. The same maths applies to Heat: Camille or Wulfgard in slot 1 get back twice the cooldown Laevatain does. That last point is our inference from cooldowns; the livestream only ran Laevatain there.
Slot 1 is about team order, not who you control. You can keep playing your carry from slot 2 or 4; only the order on the team screen matters.
One wording note. The livestream put the slot 1 cooldown cut on her talent, Proxy’s Patronage, which triggers after her ultimate. The showcase card folds it into the ultimate. Either way, you cast the ultimate and slot 1’s combo comes back sooner.
Cryo Teams Compared
Total team damage over a full rotation, from post-launch community testing without the stagger multiplier:
| Rank | Team | Result |
|---|---|---|
| 1 | Si, Last Rite, Arcane (Will), Xaihi | Highest total damage |
| 2 | Si, Tangtang, Arcane (Will), Xaihi | Just behind; Si deals just over half the damage |
| 3 | Yvonne, Si, Xaihi, Arcane (Will) | Slightly less damage, but the fastest rotation of the four |
| 4 | Si, Tangtang, Arcane (Intellect), Xaihi | A clear step lower; the longer rotation costs it |
The gaps between the top three are small, so build the one that matches the operators you own. Every team uses Xaihi and Arcane, which is the same core the developers showed at the livestream.
Team One: Si-First Cryo (the Sky Drummer Demo)
Si (slot 1), Xaihi, Arcane, Last Rite (or Yvonne)
With Last Rite and a Will-build Arcane, this is the highest-damage Si team in post-launch testing. It is also the first team the developers played at the livestream. Si’s battle skill builds four Cryo stacks, the Arcane and Xaihi ultimates buff the team, and Si’s combo bursts. Because Si sits in slot 1, her own ultimate shortens her combo cooldown and the Ink Lung attacks twice back to back.
- Xaihi heals and applies Cryo, so she covers the sustain slot without leaving the element.
- Arcane brings Arts Susceptibility, which raises all of Si’s Cryo damage. The demo used her ultimate as a team buff window.
- Last Rite is the best fourth slot. Her combo consumes every Cryo stack on the target, and Si’s Ink Lung grows with the number of stacks consumed, so one Last Rite combo feeds Si a full-size trigger. Yvonne works too, but Reddit players note she usually spends only one or two stacks on Solidification.
How the rotation runs. Open with Si’s and Xaihi’s battle skills. Two basic attacks, then Last Rite’s battle skill before the second one finishes sets up a 4-stack Cryo Infliction. Swap to Arcane for a basic attack while Xaihi’s and Last Rite’s combos fire, and use Si’s combo as soon as it comes up off Last Rite’s consume. Keep attacking on Last Rite, re-mark with Si’s battle skill, use Arcane’s and then Last Rite’s combos, and build back to 2 stacks with another Last Rite battle skill. Then cast the support ultimates (Xaihi, Si, Arcane), Last Rite’s combo as soon as it is up, and finish on Si’s combo, Last Rite’s ultimate and her finisher.
This rotation gets no real use out of Si’s slot 1 cooldown cut, and it is still the strongest team, which fits the rule below: Last Rite’s own combo is too short for the cut to matter.
Without Arcane, use Tangtang. Damage is clearly lower: aim for one 3-stack and one 4-stack Last Rite combo, and use her battle skill one extra time at the end for the last of her ultimate energy.
Teammate builds. Last Rite: 3-piece Tide Surge with a LYNX Slab, on her signature (Sundered Prince is the workable fallback). Arcane: the standard Will build with 640+ Will, since Last Rite eats the Cryo stacks and Corrosion is off the table. Xaihi: Eternal Xiranite with a Frontiers kit for more Intellect, on Detonation Unit or Chivalric Virtues (close, slight edge to Detonation Unit). Full builds are on the gear sets by operator page.
Save SP on stacks. Build Cryo with the cheaper sources first (Last Rite’s, Xaihi’s or Snowshine’s battle skill, Tangtang, Arcane’s combo) and use Si’s battle skill for the opening or final stack, a tip from the same Last Rite thread.
Build this if Si is your new carry or your Cryo bench is thin.
Team Two: Laevatain Heat (the Nefarith Demo)
Laevatain (slot 1), Si, Wulfgard or Akekuri, Ardelia
With Laevatain in slot 1, Si applies Heat instead of Cryo, and her ultimate cuts Laevatain’s combo cooldown and gives the whole team Heat Amp. Laevatain absorbs Heat infliction for her Melting Flame stacks, and absorbing it triggers Si’s combo. The two kits feed each other.
The livestream showed the other trick against Nefarith: interrupt the charge, absorb it with Si’s Final Stroke to refill Laevatain’s Melting Flame, then Immobilize. When the boss teleports, pull the Inksoul, fire Si’s ultimate, and land Laevatain’s ultimate on the Inksoul. The damage carries to the boss across the arena.
- Wulfgard is the heavy Heat applicator if you need more stacks than Si alone gives.
- Akekuri is the budget SP battery and Link buff.
- Ardelia covers healing. Antal is a Heat-team option if you already have sustain elsewhere, since he brings Susceptibility and Amp of his own.
The demo named only Laevatain and Si. The two remaining slots are our fill from the current Heat roster.
Team Three: Yvonne Solidification (the Hill Smasher Demo)
Yvonne, Si, Xaihi, Tangtang
All four of these come from the official demo. Apply Artful Intent, step back and pull the Inksoul, run the Si, Xaihi and Tangtang ultimates, trigger Solidification with Yvonne’s battle skill, then follow with Si’s combo and Yvonne’s ultimate. The Inksoul jumps to the next enemy, and when the mark expires the stored damage clears the rest of the wave.
Yvonne consumes Cryo stacks for Solidification, which triggers Si’s combo, and Tangtang keeps Cryo infliction flowing across a group. This is the strongest team on paper if you own all three limited Cryo operators, and the one with the best wave clear thanks to Tangtang’s field and the Artful Intent burst.
Slot 1 choice: Yvonne’s combo has a 20 second cooldown, so she gains a lot from the cut, against 15 seconds on Si’s own combo.
The tested version swaps Tangtang for Arcane: Yvonne, Si, Xaihi and a Will-build Arcane. It deals slightly less damage than the Last Rite team but has the fastest rotation of the Cryo teams. Si slots in by applying one of the Cryo stacks Yvonne’s rotation normally gets from Tangtang or Xaihi: Yvonne first consumes one stack, then three or four later for her ultimate energy, and Si’s battle skill covers one of those.
The rotation: Si’s and Xaihi’s battle skills, a couple of basic attacks, and hold Arcane’s combo until Xaihi’s combo lands. Then Arcane’s combo, Yvonne’s battle skill and final strike, and Si’s and Yvonne’s combos. Attack to 200 SP and repeat, this time with Xaihi’s and Arcane’s ultimates after Arcane’s combo, then Yvonne’s and Si’s ultimates. Yvonne’s ultimate final strike triggers an extra Si combo thanks to the slot 1 cooldown cut; tap it and cancel into your finisher.
With Tangtang instead of Arcane, hold Xaihi’s combo to trigger Tangtang’s, build stacks slowly with another Xaihi battle skill and a fresh Si mark, then dive on Yvonne for the ultimates.
Teammate builds. Yvonne: MI Security with a LYNX Slab. Arcane: the standard 640+ Will build.
Team Four: Budget Cryo
Si (slot 1), Last Rite or Tangtang, Alesh or Estella, Xaihi or Ardelia
If Si is your big pull and the rest of your Cryo bench is 4 and 5 stars:
- Alesh is an SP battery that converts Cryo infliction into Solidification.
- Estella spams skills cheaply and keeps the rotation moving.
- Snowshine is the Cryo Defender if you need a tank over a healer.
- Xaihi is the best sustain pick because she stays on element. Ardelia works if you do not have her.
You lose the Arcane Susceptibility from Team One, but every member still feeds or benefits from Si’s Cryo loop.
Team Five: Si-Carry Corrosion (Reddit’s Top Pick)
Si, Tangtang, Arcane (Will build), Xaihi
This was the most upvoted answer in the r/Endfield “Si Best Team” thread before launch, and post-launch testing backs it up: it lands just behind the Last Rite team, needs no Cryo DPS at all, and Si deals just over half of the team’s damage. Arcane and Tangtang each add a solid share, since everyone on the team buffs everyone else:
- Tangtang is the second damage source and keeps Cryo infliction flowing across groups.
- Arcane adds a Cryo stack with her combo and Cryo Susceptibility, and her battle skill turns the Cryo stacks into Corrosion. That consumption triggers Si’s combo, so Arcane both debuffs the target and feeds the Ink Lung.
- Xaihi heals and adds Cryo Amp.
Put Tangtang (14 second combo) or Si in slot 1. If you do not own Tangtang, the thread suggests Gilberta or a Cryo carry like Last Rite or Yvonne in her place.
How the rotation runs. Corrosion keeps its highest level for as long as you keep it up, so the plan is to set it high once and then refresh it on smaller stacks:
- Build 4 Cryo stacks and use Arcane’s battle skill for Corrosion IV (and a Si combo).
- Build 3 stacks and use Arcane’s battle skill again just before the burst window.
- Cast every ultimate, then use Arcane’s battle skill on 3 stacks once more for another Si combo.
In practice: open with Si’s and Xaihi’s battle skills and Arcane’s and Tangtang’s combos. Hold Xaihi’s combo until Tangtang’s is ready so both freeze time together. Use Arcane’s battle skill when her combo is almost back, then Si’s combo (dodge-cancel it, and skip Arcane’s combo if it procs there). Re-mark with Si’s battle skill, then Xaihi’s. At 100 SP, fire Xaihi’s combo with Tangtang’s ultimate, then Arcane’s battle skill, Tangtang’s and Si’s combos, and Xaihi’s ultimate. Dodge-cancel Si’s combo, dive attack, cast Si’s ultimate, then Arcane’s combo and ultimate, your finisher, and one more Arcane battle skill into a Si combo.
Teammate builds. Arcane runs an odd Will build here: Eternal Xiranite Armor, Hot Work Gloves and two Power Cartridges, which maxes Arts Intensity while keeping Will above Intellect. On her signature or Junction Point, that needs an essence with no more than +3 Intellect. If that is too fiddly, 3-piece Deep Rampart with a Bracing Slab is not far behind, and still a clear step above the standard Will build. Tangtang wants one or two pieces of Ultimate Gain: Bonekrusha Heavy Armor (or Heavy Armor T2) with the Rift Trekker Silver Blade, the only kit with her stats that covers the rest. Xaihi runs the same Eternal Xiranite and Frontiers build as in Team One.
The Intellect Arcane version splits the damage roughly evenly between Si and Arcane, but tests a clear step lower because the rotation is longer. Arcane’s battle skill goes on 4, then 1, then 1 stack: sit at 3 stacks for a long time, delay Si’s Initial Stroke so the mark captures the whole burst, let Si’s battle skill make the fourth stack, and dive for Tangtang’s ultimate after Si’s combo and ultimate so a fresh single stack is ready for Arcane. Most of the Ink Lung’s damage is in its 750% base, so small stacks cost Si little. Arcane’s signature matters more on this build.
Team Six: Rossi Heat (Community Theorycraft)
Camille (slot 1), Rossi, Wulfgard, Si
Put forward in the r/ArknightsEndfield optimisation thread. Si, Camille and Wulfgard stack Heat infliction; Rossi’s combo needs an arts infliction on the target and consumes it, which triggers both Camille’s and Si’s combos. In the ultimate window Camille brings Link, Wulfgard brings Combustion and Si brings Heat Amp. Camille sits in slot 1 so Si applies Heat and the 20 second Camille combo gets the cut.
Nobody has run this yet, so treat it as a team to test on launch day rather than a recommendation. It is the best answer so far for Rossi owners without Laevatain.
Quick-Reference: Si Pairing Tiers
Method. “Best” here means how directly a teammate feeds Si’s combo trigger (consumed or absorbed Cryo or Heat infliction) or benefits from her Cryo and Heat Amp. Based on her skill tables, the post-launch Cryo team comparison above, the three 1.6 livestream demo teams, the current kits in our operator database, and the team threads on r/Endfield and r/ArknightsEndfield. Checked October 17, 2026, on Version 1.6. Heat pairings are not yet tested and may move.
| Tier | Operators | Why |
|---|---|---|
| Core | Xaihi, Arcane, Last Rite, Yvonne, Tangtang, Laevatain | In all four tested Cryo teams (Xaihi, Arcane) or the official demos; feed or use her combo and Amp directly |
| Strong | Camille | A 20s Heat combo for slot 1 |
| Good | Wulfgard, Ardelia, Alesh, Rossi | Heat stacks, flexible healing, Cryo SP battery, Heat consumer (untested) |
| Budget | Akekuri, Estella, Snowshine, Antal | Cheap role fillers inside Cryo or Heat teams |
| Avoid as a pair | Physical, Electric and Nature carries | Her Amp does not apply to them |
Teams by Content Type
- Single bosses that move or teleport: Team Two. The Inksoul lets Laevatain keep landing her ultimate.
- Waves of mobs: Team Three or Team Five. Tangtang’s field plus the Artful Intent Fixed DMG burst clears groups.
- Tanky elites with high DEF or RES: any team. The Artful Intent burst ignores DEF, RES and damage reduction, so it is the part of her kit that does not care how tough the target is.
- No Cryo DPS on your account: Team Five, with Si as the carry.
- Rossi owners without Laevatain: Team Six.
- Early accounts: Team Four, or Team One with Ardelia in place of Arcane.
Common Mistakes to Avoid
- Leaving slot 1 to chance. If your slot 1 is a Physical or Electric operator, Si still applies Cryo, but your carry gets nothing from the cooldown cut.
- Putting Last Rite in slot 1. Her combo is back in 9 seconds anyway. Give the cut to a 20 second combo.
- Putting a Heat carry in slot 1 in a Cryo team. Si switches to Heat infliction and stops feeding your Cryo carry.
- Running her in a team with no consumer. Her combo only fires when stacks are consumed or absorbed. Without Laevatain, Yvonne, Last Rite, Arcane’s Corrosion or another reaction source, the Ink Lung stays home.
- Spending Si’s battle skill on every stack. Use cheaper Cryo sources and save her battle skill for the first or last stack.
- Expecting the Inksoul to double area damage. Hitting both it and the host only counts once.
- Skipping the healer. Si brings no sustain.
- Hitting the wrong target with Artful Intent. Mark the target that will take the most damage, usually the boss or the elite, so the stored total is worth it.
What Reddit Is Running
Where the community lands so far, across the Si threads on both subreddits:
- Si can carry. The top two answers in the Si Best Team thread run her as the main damage dealer (Team Five), pointing to the Damage Dealer tag on her character sheet.
- Last Rite over Yvonne. In the Yvonne-for-Si thread, the consensus is to skip Yvonne if you already own Last Rite, because Last Rite consumes more stacks per combo.
- Tangtang is the pull to pair with her. Players building around Last Rite and Yvonne lean to Si plus Tangtang over a second Cryo DPS.
- Heat is not just Laevatain. Camille, Wulfgard and Rossi teams are being drafted in the Heat thread and the optimisation thread (Team Six).
- The Inksoul is the selling point. Players expect it to matter most against mobile bosses such as Nefarith, Rakerbeast and Tidalklast.
What Would Change These Picks
Launch settled two open questions: Arcane’s Corrosion does trigger Si’s combo (Team Five runs on it), and Jade Vessel is her signature (see the best Si build guide). Still open:
- Heat team testing. Only the Cryo teams have been compared so far. Teams Two and Six may move once Heat rotations are run.
- Amp stacking. Whether Si’s Cryo Amp and Xaihi’s Cryo Amp add together decides how good the Si and Xaihi pairing really is.
- Her Potential 5. It cuts her combo cooldown by 2 seconds, so a P5 rotation built around more Ink Lungs could change which team is on top.
- Argent Flow. He arrives in the second half of 1.6 as an Electric Guard, outside Si’s elements, so he is unlikely to change these teams.
Final Verdict
Si is the first support who raises both Cryo and Heat teams, and her combo fires off reactions those teams already make. Build Team One if you own Last Rite (it tests highest), Team Two if you run Laevatain, and Team Three if you own Yvonne. Team Five is the pick if you want Si herself as the carry, and it tests barely behind Team One, and Team Six is worth testing if you own Rossi and Camille. Whatever you build, decide slot 1 first, and give it to the longest combo cooldown in the team.
Plan your pulls with the pity calculator, and compare her against the rest of the roster on the team tier list.
Frequently Asked Questions
What is the best team for Si in Arknights Endfield? Si, Last Rite, Arcane (Will build) and Xaihi. In post-launch rotation testing it deals the most damage of her Cryo teams, just ahead of the Si-carry team that swaps Last Rite for Tangtang and uses Arcane’s Corrosion to trigger Si’s combo. A Yvonne team deals slightly less but has the fastest rotation. All three follow the team the developers played at the 1.6 livestream: Si, Xaihi, Arcane and a Cryo carry.
Who should be in slot 1 with Si? Either Si herself or a Heat carry. Si’s battle skill applies the element of the operator in Team Position 1, and her ultimate shortens slot 1’s combo cooldown. Si in slot 1 gives her back-to-back Ink Lung combos. A Heat operator such as Laevatain in slot 1 makes Si apply Heat infliction and speeds up the carry’s combo instead. Any other element in slot 1 just leaves her on Cryo. Avoid Last Rite in slot 1: her combo cooldown is only 9 seconds, so the cut is mostly wasted.
Does Si work in Heat teams? Yes, and that is unusual for a Cryo operator. Put a Heat operator in slot 1 and her battle skill applies Heat infliction, her combo triggers off consumed or absorbed Heat infliction, and her ultimate grants Heat Amp to the whole team. The official livestream ran her with Laevatain.
Is Si good with Laevatain? On paper she is one of the better Heat partners announced so far. Laevatain absorbs Heat infliction for Melting Flame, absorbing it triggers Si’s combo, and Si’s ultimate gives Heat Amp. The Inksoul also lets Laevatain land her ultimate on a boss that teleports away, which the livestream showed against Nefarith.
Is Si good with Yvonne? Yes. Yvonne consumes Cryo infliction for Solidification, consuming it triggers Si’s combo, and Si’s ultimate gives Cryo Amp. The developers demoed Si, Yvonne, Xaihi and Tangtang against a Hill Smasher, with the stored Artful Intent damage clearing the rest of the wave.
Is Si better with Last Rite or Yvonne? Last Rite, by a small margin. Her combo consumes every Cryo stack on the target, and Si’s Ink Lung adds 100% ATK per stack consumed on top of its 750% base. In post-launch rotation testing the Last Rite team dealt the most damage, while the Yvonne team dealt slightly less but cycled fastest. If you already own Last Rite, you do not need to pull Yvonne just for Si.
Does hitting the Inksoul and the boss at once double the damage? No. The developers said at the livestream that an area attack hitting both the Inksoul and its host only deals its damage once. The Inksoul is for reaching a target that has moved away, not for doubling damage.
Is Si a DPS or a support? Both. Her official class is Supporter and her ultimate is a team-wide 36% Cryo and Heat Amp, but her combo hits for 750% ATK plus 100% per stack consumed. In the Si, Tangtang, Arcane and Xaihi team she deals just over half of the team’s damage, and that team tests only slightly below the Last Rite team.
What is a cheap Si team? Si in slot 1, Last Rite or Tangtang if you own one, Alesh or Estella for Cryo stacks and SP, and Xaihi or Ardelia for healing. If you own Arcane, Si, Tangtang, Arcane and Xaihi runs Si as the carry with no Cryo DPS needed. For a Heat version on a budget, Wulfgard and Akekuri are the low-cost Heat applicators and SP batteries.
Do Si and Xaihi stack? They appear together in two of the three official demo teams, so the developers clearly intend them to share a team. Both grant Cryo Amp. Whether two Cryo Amps add together or the higher one wins is not confirmed yet, so treat Xaihi as the healer and Cryo applicator first and the Amp as a bonus until the in-game numbers are out.
Should I pull for Si? Pull if you run Cryo or Heat teams, because she raises both and adds a slot-1 combo cooldown cut. Skip if your main teams are Physical, Electric or Nature, where none of her Amp applies. Her banner runs from October 15 to November 5, 2026.
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