Ashnod the Uncaring + Manifold Key + Bolas's Citadel

Ashnod the Uncaring

Manifold Key

Bolas's Citadel

How it works

1. Activate Bolas's Citadel by tapping it and sacrificing ten other nonland permanents you control.
2. Ashnod the Uncaring triggers, copying Bolas's Citadel's ability.
3. Resolve both Bolas's Citadel abilities, causing each opponent to lose 20 life.
4. Each opponent that had 20 or less life loses the game due to having 0 or less life.
5. Activate Manifold Key's first ability by paying 1 and tapping it, untapping Bolas's Citadel.
6. Activate Bolas's Citadel by tapping it and sacrificing itself, Manifold Key, and eight other nonland permanents you control.
7. Ashnod the Uncaring triggers, copying Bolas's Citadel's ability.
8. Resolve both Bolas's Citadel abilities, causing each opponent to lose 20 life.
9. Each remaining opponent loses the game due to having 0 or less life.

This clever loop harnesses the sacrifice-heavy activation of Bolas's Citadel, letting you drain your opponents out of the game in a single devastating stroke. Ashnod the Uncaring serves as the ultimate amplifier here, turning a single ten-sacrifice activation into a copied trigger that doubles the life loss instantly. To keep the pressure mounting, Manifold Key steps in by using its untap ability on Bolas's Citadel, allowing you to recycle the massive sacrifice routine all over again until your foes have nowhere left to hide.