Korvold, Fae-Cursed King + Pitiless Plunderer + Zombie Infestation + Yahenni, Undying Partisan

Korvold, Fae-Cursed King

Pitiless Plunderer

Zombie Infestation

Yahenni, Undying Partisan

How it works

1. Activate Yahenni by sacrificing another creature.
2. Korvold's second ability and Pitiless Plunderer trigger.
3. Resolve the Korvold trigger, putting a +1/+1 counter on it and causing you to draw a card.
4. Resolve the Pitiless Plunderer trigger, creating a Treasure token.
5. Resolve the Yahenni ability.
6. Activate the Treasure by tapping and sacrificing it, adding one mana of any color.
7. Korvold's second ability triggers, putting a +1/+1 counter on it and causing you to draw a card.
8. Activate Zombie Infestation by discarding two cards, creating a 2/2 Zombie creature token.
9. Repeat.

This loop transforms a modest pile of disposable bodies into an engine of endless power and card advantage. You start by using Yahenni, Undying Partisan's activated ability to sacrifice a creature—such as a token made by Zombie Infestation—which triggers Pitiless Plunderer to generate a refunding Treasure token while simultaneously fueling Korvold, Fae-Cursed King to draw cards and grow larger. Sacrificing that Treasure then triggers Korvold a second time to keep your hand full, supplying you with the fuel needed to discard two cards into Zombie Infestation and repeat the whole cycle.