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

Havengul Lich

Grimgrin, Corpse-Born

Esika, God of the Tree // The Prismatic Bridge

Cathodion

How it works

1. Activate Grimgrin by sacrificing Cathodion, untapping Grimgrin and putting a +1/+1 counter on it.
2. When Cathodion 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 Cathodion from your graveyard this turn.
5. Cast Cathodion from your graveyard by paying its casting cost.
6. Repeat.