Yarus, Roar of the Old Gods + Karlov Watchdog + Blasting Station + Stiltzkin, Moogle Merchant

Yarus, Roar of the Old Gods

Karlov Watchdog

Blasting Station

Stiltzkin, Moogle Merchant

How it works

1. Activate Stiltzkin by paying 2 and tapping it, giving control of Karlov Watchdog to an opponent.
2. During the opponent's turn, activate Blasting Station by tapping it and sacrificing a face-down creature you control.
3. 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.
4. When the creature enters the battlefield, Blasting Station triggers, untapping Blasting Station.
5. Resolve the Blasting Station ability from step 2.
6. Repeat from step 2.