K'rrik, Son of Yawgmoth + Pontiff of Blight + Mourning + Cloud Key

Prerequisites

• You control at least four creatures.
• You have at least three opponents.
• "Enchantment" chosen with Cloud Key.

Steps

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

Effects

• Near-infinite lifegain
• Near-infinite lifegain triggers
• Near-infinite lifeloss
• Near-infinite storm count