The Serpent Society + Overseer of the Damned + Archetype of Finality + Yahenni, Undying Partisan

The Serpent Society

Overseer of the Damned

Archetype of Finality

Yahenni, Undying Partisan

How it works

1. When an opponent controls a nontoken creature, activate Yahenni by sacrificing another creature.
2. When the creature dies, The Serpent Society triggers, causing each opponent to sacrifice a creature.
3. When the opposing creature(s) die, Overseer of the Damned triggers that many times, creating that many tapped 2/2 Zombie creature tokens that will have deathtouch due to Archetype of Finality.
4. Resolve the Yahenni ability.
5. Repeat as needed.

This loop locks down your opponents' boards by weaponizing their own creatures through a chain of continuous triggers. It all begins when Yahenni, Undying Partisan sacrifices a creature—likely one of the Zombie tokens generated by Overseer of the Damned—sending The Serpent Society's deathtouch trigger onto the stack and forcing an opponent to sacrifice a nontoken creature. That death immediately satisfies Overseer of the Damned's trigger to create another tapped 2/2 black Zombie creature token, which instantly gains deathtouch thanks to the static ability of Archetype of Finality. Because The Serpent Society explicitly cares when *any* creature you control with deathtouch dies, sacrificing those newly minted Zombies fuels the loop indefinitely, stripping your opponents of their entire boards and locking them out of keeping any nontoken creatures.