Megumi Fushiguro

A Yellow Jujutsu attacker who doubles as a powerful team amplifier through his Domain Expansion. He deals solid damage himself, but his real value is the Domain, which craters the enemy team's defenses and protects him at the same time.

His Ultimate, Chimera Shadow Garden, is the centerpiece: it hits hard with a guaranteed Stun and then expands a Domain that increases all enemies' Damage Received, lowers their Damage Dealt, grants him Attack Immunity, and makes his own skills cheaper — turning him into a near-untouchable amplifier for several turns.

While the Domain is active his other skills upgrade dramatically: S1 gains a massive Damage Received debuff on the target, S2 becomes a stronger AoE, and S3 turns into a heavy single-target hit with a big Damage Received debuff and a guaranteed Stun — so his whole kit comes online inside the Domain.

Outside the Domain he is a serviceable attacker with some baseline debuffs, but he is clearly built to fight from inside it; the Domain is where both his damage and his team utility peak.

He is also self-sufficient on resources: a characteristic refills his Ultimate gauge whenever his Cursed Energy runs low, helping him cycle his Domain, though the Domain drains his energy and blocks Ultimate charge once it ends.

The optimal setup is to open the Domain early, then stack his upgraded S1 on the target two or three times to pile its enormous Damage Received debuff before a teammate fires their own Ultimate into the softened enemy — making him a fantastic enabler for a burst carry. Note his Domain cannot overwrite an enemy Domain already in play, so cast it before other Domain users.