C6 or Nothing: 4-Star Supports Hiding Their Real Kit

Some 4-star supports ship with half a kit. Not weak kits. Half kits. The stats in the talent description are all there, the rotations look fine on paper, and then you play them for a week and something feels off by about a second every rotation.

That second is usually a constellation.

This is the pattern I keep running into with 4-star supports: the constellation column is where the real kit lives, and the C0 version is a demo. Here is how it works on three characters, and how to spot it before you spend a pull.

Faruzan: The Part the Kit Text Doesn't Say

Read Faruzan's kit and she looks usable at C0. She shreds Anemo RES, she buffs Anemo damage, her Burst does off-field hits. Nothing screams "wait for C6".

Then you try to burst her.

Press her Skill and watch the particle counter: zero. The particles come from the Pressurized Collapse vortex, which only spawns from a charged attack. So your actual rotation at C0-C5 is Skill, aim, charged attack, Burst, catch 2 Anemo particles, swap out. That is an extra second of field time on a support nobody wants on field, for 2 particles, with an internal cooldown on top. Do it twice in a rotation and you get nothing extra.

At C6 the whole structure flips. Her Burst applies Pressurized Collapse on the active character's Anemo hits, the vortex ticks off-field, and she generates 6 Anemo particles per Burst rotation without casting Skill at all. The driver catches everything; everyone else catches 60% of it. If your driver is Anemo, that is 18 energy back for the team, every rotation, from a character who never needs field time.

The kit text never says this. What it says is "periodically apply Pressurized Collapse". What it means is that C6 Faruzan has an energy budget and C0 Faruzan does not.

The build numbers move with it. Pre-C6 she wants 260-300% ER to function, which against a boss with zero drops lands at 318%: a number only reachable with the best artifacts you have ever found. At C6 it drops to 222% against the same boss and 159% on elite content, while her field time drops to almost nothing. Full breakpoints in the Faruzan ER requirements guide.

It is not universal, though. In a Wanderer team with Durin and Nicole, the team already generates plenty of energy and C6 Faruzan is at her least important. In a Xiao or Vesna team, those 6 extra particles are energy your carry catches directly, and C6 is the difference between a support who works and one who doesn't. A support whose buffs live on a Burst they cannot afford is not doing anything, constellation or not.

Diona: A Shield and a Promise

Diona is the blunt version of the same problem. Go read her C1 through C5:

• C1: 15 Energy after her Burst ends. Energy refunds that land after the cast don't help you. You need her Burst up on rotation two, which means you build enough ER that you never needed the refund.
• C2: a stronger shield, and a shield in co-op. Fine. Not a kit.
• C3, C5: talent levels on a support whose personal damage was never the point.
• C4: not worth a sentence.

Before C6, Diona is a shield bot. That is the entire pitch: you run her because you want a shield and nothing else fits. The Stellar buffs gave her a little off-field damage after her Skill that smooths Cryo application for polestar stacks, and a slightly awkward ToM proc (her ICD and the team's reaction rate fight each other, so in many teams Noblesse is the better set anyway), but none of that is why anyone slots her in.

Why anyone slots her in is C6: 200 EM and a 40% Stellar damage bonus, for both Stellar Swirl and Stellar Conduct, on the active character. That is close to a full support artifact set's worth of stats handed to your carry for free, every rotation.

Three practical details people get wrong:

• The buff lasts longer than the tooltip. The field says 12 seconds, but the timer starts when the projectile lands and the buff lingers about 2 seconds after the field expires. Effective uptime is closer to 15-16 seconds.
• It only hits the active character. Your carry gets it. Your off-field units don't.
• For EM scalers it beats the alternatives outright. A direct 200 EM buff on Yumemizuki Mizuki matters far more than a Stellar damage bonus, because she scales with EM. A flat Stellar buff with no EM attached is the weaker pick there.

Diona is good right now. She is also, before C6, a shield with a Burst slot going to waste. Both things are true.

Chongyun: The Constellation That Sounds Better Than It Plays

Chongyun is the counterexample, and he is worth more than the other two combined for learning the pattern.

His base kit is thin: a Cryo infusion that every Cryo damage dealer already has in their kit, 8% attack speed, and a 10% RES shred with a bad duration and an awkward trigger, since it fires when his field expires. His Burst hits for very little by 2026 standards. The real value is in his constellations, and specifically C2: 15% cooldown reduction for the team when he uses his Skill.

Do the math and it looks huge. 15% shorter cooldowns means 15% shorter rotations, which is about 17-18% more DPS. That is not a small number. So why is Chongyun still sitting on nobody's team?

Because rotations on a training dummy are not rotations in a chamber. You are not gated only by cooldowns, you are also gated by animation lengths. And the moment you dodge once, your rotation gets a second slower, you swap to a character a second after their cooldown came up anyway, and the CDR did nothing. On paper: 17-18%. In practice: often zero.

There is one case where it goes the other way. If a character has flat cooldown reduction of their own, percentages stack on top of it. A 20-second ability with 15% reduction goes to 17 seconds; if that ability also refunds 15 seconds on hit, its effective cooldown drops from 5 seconds to 2. That 15% CDR becomes 60% effective, 2.5 times the casts. Right now only a handful of kits interact that way, and almost none of them want Chongyun in the slot.

Chongyun is potential, not power. He is a character who could find a home in a strong team tomorrow if the right kit arrives, and who does nothing for you today.

Not Every Breakpoint Is C6

Here is the part most tier lists skip: constellation gating is a spectrum, and assuming the gate is always C6 will cost you pulls just as often as assuming there is no gate at all.

• Lynette's only constellation that matters is C2. C0 works, C1 and C6 are dead weight. You stop at C2 or you don't chase at all. Details in the Lynette Stellar Conduct guide.
• Aliosha is the pure C6 case: the mark stacks twice, doubling the ATK buff and adding 100 EM. Without it, other 4-star supports simply compete for his slot. Full analysis in the Aliosha build guide.
• Faruzan sits in the middle: useful before C6, a different character after it.

Same rarity, three different gates: no gate, mid gate, last constellation.

How to Spot a Half-Kit Before You Pull

Four checks, in order, all doable from the kit description and the constellation list:

1. Find where the buffs live. If the buffs are on the Burst, the kit has an energy requirement hidden inside it. Then ask what the kit does to meet that requirement. Faruzan's answer before C6 was "nothing, do a charged attack".
2. Read C0 to C5 as one unit, then read C6 alone. If C1-C5 are stat crumbs and C6 adds a mechanic, that is a half kit. Diona's C1-C5 are crumbs; her C6 is a support set.
3. Check who the buff hits. Active character only changes which teams want the unit. It also changes how much the constellation matters to your account, not just to a showcase.
4. Separate the paper number from the played number. Chongyun's 17-18% is real on a dummy. Ask what eats it in a real chamber: dodges, animations, refresh timing.

So Should You Pull for the 4-Star?

Usually no. Pulling for a specific 4-star is bad odds, and building pity on a banner whose 5-star you don't want is worse. But the full sentence matters more than the rule: if you don't want the 5-star at all, never chase the 4-star. If the 5-star is someone you would reasonably take anyway, the math changes, because copies of the 4-star come along for free while you get something you wanted regardless.

And run the numbers for the constellation you actually own, not the one you are hoping for. The ER calculator will tell you what your C0 Faruzan needs to burst, which is a very different build from the C6 version in someone else's showcase. Better to find out here than in a chamber.