Havengul Lich + Grimgrin, Corpse-Born + Esika, God of the Tree // The Prismatic Bridge + Su-Chi

Havengul Lich

Grimgrin, Corpse-Born

Esika, God of the Tree // The Prismatic Bridge

Su-Chi

How it works

1. Activate Grimgrin by sacrificing Su-Chi, untapping Grimgrin and putting a +1/+1 counter on it.
2. When Su-Chi dies, it triggers, adding mana equal to its casting cost.
3. Activate Grimgrin's ability from Esika by tapping Grimgrin, adding one mana.
4. Activate Havengul Lich by paying 1, allowing you to cast Su-Chi from your graveyard this turn.
5. Cast Su-Chi from your graveyard by paying its casting cost.
6. Repeat.