Xilonen

5★

GeoSwordSupport

TL;DR

Xilonen's Skill puts her on rollerblades. Attacking twice drops enemy resistance to your teammates' elements by up to 36%. Her Burst heals the active character. Her abilities scale off Defence, so she needs almost no Crit and not much Energy Recharge. She is a 5-star support you can build with cheap spare artifacts and still get the full effect.

Rotation

Skill (E) to start her rollerblading state.
Two Normal Attacks that actually land. This is the part that turns the shred on. You know it worked when she comes off the blades and gains a circle around her feet.
Burst (Q) if you need the healing, otherwise skip it.
Swap to your damage dealer. The shred runs for 15 seconds from the moment it turned on.

The game's own three step summary of Xilonen: use the Skill, land two Normal Attacks, the samplers activate and the resistance reduction applies — Step 2 is the important step that's easy to forget.

Abilities

Skill (E)	She dashes forward and gets on the blades. The shred is not on yet. Normal Attacks while she's skating fill her Nightsoul meter. The moment it fills she comes off the blades and the shred switches on for 15 seconds.
Burst (Q)	A Geo hit. If your team is the right shape it heals your active character every second and a half for about 12 seconds.
Her three samplers	She carries three and they start as Geo. Each Pyro, Hydro, Electro or Cryo teammate converts one to match them. Those are the elements she shreds, so your team composition sets what she does before the fight even starts. Anemo, Dendro and Geo teammates convert nothing. At least two have to be converted or the useful half of her kit switches off, which the next section explains.

The one mechanic to understand

Your team composition decides what she does.

With two or more Pyro, Hydro, Electro or Cryo characters in the party, two things switch on. Her Normal Attacks start filling her Nightsoul meter, which is the only way the shred ever fires. Her Burst heals instead of doing a bit more damage. Below two, the kicks give her nothing and the Nightsoul meter just drains. She still shreds Geo resistance while she's on the blades, which is no use to you unless somebody in the team is dealing Geo damage. That's the whole reason a double Geo team makes her look useless. The team you'd naturally build around her is the team that turns her on, so most players never see the failure case, but it's worth knowing it exists.

Xilonen mid-fight with three samplers floating beside her, one purple, one red and one blue — Purple, red and blue: this party converted all three. A yellow one is still Geo, so nobody in the team matched it.

What actually matters

Two Pyro, Hydro, Electro or Cryo teammates. See above. This is the only real requirement in her kit.
Defence. Her healing and her damage both come off it. Defence sands, Defence goblet and Defence substats. Almost nothing else competes for that stat so the artifacts are cheap.
The kicks have to land. Skill on its own does nothing for your team. Cast, land two kicks, swap off. Once it's on, the shred hangs around for 15 seconds after she swaps out, so there's no rush to get back to her.

Gear

Weapon	Energy Recharge and Defence. Favonius Sword covers her Energy on its own and is the pick almost everyone lands on. It needs about 30% Crit Rate to trigger reliably, which is the only Crit she wants.
Artifacts	4-piece Scroll of the Hero of Cinder City. It's a large team-wide damage bonus and it is well ahead of anything else on her.

Sands	Goblet	Circlet	Substats
DEF	DEF	DEF	DEF / ER

Works well with

These four are the only elements she can shred and you want at least two of them in the party. Anemo, Dendro and Geo teammates do not convert a sampler.

Don't bother

Crit, beyond the roughly 30% needed for Favonius Sword to work.
Attack or HP. Neither appears anywhere in her kit.
Her Burst, if you already have a healer. Skill and two kicks is the part you came for.
Skating around for the sake of it. It's fun, but landing the two kicks ends the state anyway.

Want the full deep dive? Read Xilonen on KeqingMains.

Found something wrong? If a rotation is wrong, or a page skips the bit you needed, the contact form lands straight in my inbox.