Vren, the Relentless

Most graveyard denial treats exile as a terminal effect: strand a threat, shut off recursion, move on. This one reads the same replacement as an input. Every creature an opponent would lose becomes an exile instead, and the end-step trigger converts that turn's exile count into an equal number of Rat tokens, each of which grows with every other Rat you control. The two halves are the same event counted twice: an opponent's loss is your token count, and their instinct to trade or sacrifice their way out of trouble only inflates the number. Because the trigger fires at the beginning of each end step, not just theirs, deaths on your own turn (to your removal, to combat) pay you back on your own end step too, so the engine never idles. The scaling is what makes it a genuine tribal payoff rather than a hate piece with a rider: Rats want to go wide precisely because each new body buffs the entire swarm, so the more the exile count climbs, the steeper each token's individual value becomes. It hits every deck built on creatures cycling through the graveyard, since bodies that are exiled rather than dying never come back to be looped. Ward is the tax that protects the piece doing all the work, forcing opponents to overpay before they can even start dismantling the loop that their own creatures keep feeding.