Mortuary + Goblin Bombardment + Bolas's Citadel + Rograkh, Son of Rohgahh

Mortuary

Goblin Bombardment

Bolas's Citadel

Rograkh, Son of Rohgahh

How it works

1. Activate Goblin Bombardment by sacrificing Rograkh
2. When Rograkh dies, Mortuary triggers, putting Rograkh from your graveyard onto the top of your library.
3. Resolve the Goblin Bombardment ability.
4. Cast Rograkh from the top of your library by paying 0 life.
5. Repeat.

This clever loop turns zero-mana casting costs into a relentless engine of destruction by combining free sacrifice outlets with library manipulation. You begin by using Goblin Bombardment to sacrifice Rograkh, Son of Rohgahh, dealing damage while sending the tiny commander straight to the graveyard. That death immediately triggers Mortuary, which intercepts Rograkh and places him back on top of your library instead of letting him linger in the yard. From there, Bolas's Citadel allows you to play Rograkh right back onto the battlefield from the top of your library for zero life—its alternative casting cost—ready to be sacrificed all over again.