Grenzo, Dungeon Warden + Transplant Theorist + Su-Chi Cave Guard + Goblin Bombardment

Grenzo, Dungeon Warden

Transplant Theorist

Su-Chi Cave Guard

Goblin Bombardment

How it works

1. Activate Goblin Bombardment by sacrificing Su-Chi Cave Guard.
2. When Su-Chi Cave Guard dies, it triggers, adding eight C.
3. Resolve the Goblin Bombardment ability, dealing 1 damage to any target.
4. Activate Transplant Theorist by paying 2, putting Su-Chi Cave Guard on the bottom of your library from your graveyard.
5. Activate Grenzo by paying 2, putting Su-Chi Cave Guard into your graveyard from the bottom of your library, and then putting it onto the battlefield.
6. Repeat.

This loop transforms Su-Chi Cave Guard into an unstoppable engine of destruction by leveraging its own death trigger to self-sustain the mana required to recast it. When you sacrifice Su-Chi Cave Guard to Goblin Bombardment, it floods your pool with colorless mana and triggers Transplant Theorist, whose activated ability then tucks the automaton neatly back to the bottom of your library. From there, Grenzo, Dungeon Warden uses that very same mana to effortlessly reach down, pull Su-Chi Cave Guard right back onto the battlefield, and ready the entire circuit to fire again.