Bloodtithe Sacrifice Loop
6★Spirit · Reality DMG · Riposte + self-HP-cost — trades her own Current HP for AoE Reality DMG plus a bonus HP-cost follow-up hit, Euphoria (E1) required.
6★Mineral · Reality DMG · Array + Moxie + team-HP-cost — Ultimate costs all allies 20% Current HP to place 【Blood Domain】, Euphoria (E1) required.
6★Mineral · Reality DMG · Bullet + Crit + Bloodtithe — passive converts any ally's HP loss into shared Bloodtithe, then spends it on 【Dread Bullet】 bursts, no Euphoria required.
6★Mineral · no fixed DMG type · Heal + Crit + Moxie + Bloodtithe — same ally-HP-loss-to-Bloodtithe passive as Sentinel, and her heals offset the HP the other three spend, no Euphoria required.
Nautika and Semmelweis both spend HP as a resource instead of hoarding it — Nautika's Incantations trade her own Current HP for extra Reality DMG, and Semmelweis's Ultimate costs every ally 20% Current HP to drop the 【Blood Domain】 Array. Sentinel and Rubuska both carry the same passive that turns any ally's HP loss into shared 【Bloodtithe】, so every point the front two spend feeds the Bloodtithe that Sentinel cashes in on 【Dread Bullet】 bursts and Rubuska turns back into team healing.