Yarus, Roar of the Old Gods + Karlov Watchdog + Blasting Station + Coveted Falcon

Yarus, Roar of the Old Gods

Karlov Watchdog

Blasting Station

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 Blasting Station by tapping it and 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. When the creature enters, Blasting Station triggers, untapping Blasting Station.
6. Resolve the Blasting Station ability.
7. Repeat from step 3.

This loop transforms the synergy of hidden threats and sacrifice into an endless engine of destruction, fueled by Yarus, Roar of the Old Gods keeping your morphs recycling infinitely through death triggers. While Blasting Station provides the active sacrifice outlet and the lethal damage loop, Karlov Watchdog cleverly acts as a double-edged sword: it boosts your board on the attack, but more importantly, its static ability prevents opponents from turning things face up during your turn while allowing Yarus to successfully resurrect your sacrificed creatures face down without accidentally flipping them back up. Finally, Coveted Falcon sets up the entire puzzle by letting you hand Karlov Watchdog over to an opponent via its face-up trigger, ensuring the whole recursion machine can run smoothly.