K'rrik, Son of Yawgmoth + Pontiff of Blight + Mourning + Birgi, God of Storytelling // Harnfel, Horn of Bounty

K'rrik, Son of Yawgmoth

Pontiff of Blight

Mourning

Birgi, God of Storytelling // Harnfel, Horn of Bounty

How it works

1. Cast Mourning by paying 1 and 2 life if able, or 1 otherwise.
2. Each creature you control's extort ability and Birgi trigger.
3. Resolve the Birgi trigger, adding .
4. Resolve the first extort trigger, causing you to pay 2 life if able, or W/B otherwise, causing each opponent to lose 1 life and you to gain that much life.
5. Repeat step 4 for each remaining extort trigger.
6. Resolve Mourning, attaching it to a creature you control.
7. Activate Mourning by paying 2 life, returning it from the battlefield to your hand.
8. Repeat until an opponent loses the game due to having 0 or less life.

This ingenious loop hinges on a clever cost-reduction ecosystem that turns life into a lethal weapon. With K'rrik, Son of Yawgmoth on the battlefield, you can pay life instead of black mana for your spells, allowing you to repeatedly cast Mourning and activate its return ability for life instead of mana. Pontiff of Blight grants all your creatures extort, meaning every iteration of casting Mourning triggers a cascade of life drains that replenish the life you spend. Meanwhile, Birgi, God of Storytelling sits quietly on the board providing red mana whenever you cast a spell, tying the whole engine together into a self-sustaining loop that drains your opponents out of the game.