Yarus, Roar of the Old Gods + Karlov Watchdog + Goblin Bombardment + Coveted Falcon

Yarus, Roar of the Old Gods

Karlov Watchdog

Goblin Bombardment

Coveted Falcon

How it works

1. Activate Coveted Falcon by paying 1, turning it face up.
2. Coveted Falcon triggers, causing an opponent to gain control of Karlov Watchdog and causing you to draw a card.
3. During the opponent's turn, activate Goblin Bombardment by sacrificing a face-down creature you control.
4. When the creature dies, Yarus's second ability triggers, returning it from your graveyard to the battlefield face-down as a 2/2 creature, and then not turning it face-up due to Karlov Watchdog.
5. Resolve the Goblin Bombardment ability.
6. Repeat from step 3.

This intricate engine hinges on exploiting the clever interaction between Yarus, Roar of the Old Gods and Karlov Watchdog to lock your sacrificed permanents in a perpetual face-down loop. When you use Goblin Bombardment to sacrifice a face-down creature, Yarus's triggered ability steps in to return it to the battlefield face down—and because Karlov Watchdog shuts down any attempt to turn permanents face up during your turn, that creature safely stays face-down to be sacrificed all over again. Meanwhile, Coveted Falcon acts as a brilliant puzzle piece, allowing you to hand over your control pieces to opponents when turned face up while fueling your hand with bonus card draw.