Korvold, Fae-Cursed King + Pitiless Plunderer + Zombie Infestation + Umbral Collar Zealot

Korvold, Fae-Cursed King

Pitiless Plunderer

Zombie Infestation

Umbral Collar Zealot

How it works

1. Activate Umbral Collar Zealot 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 Umbral Collar Zealot ability, putting a +1/+1 counter on it.
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 clever loop transforms your graveyard and hand into a perpetual motion machine fueled by death and taxes. Umbral Collar Zealot provides the crucial sacrifice outlet, feeding Korvold, Fae-Cursed King while triggering Pitiless Plunderer to generate a Treasure token each time a creature falls. That generated Treasure is then sacrificed to pay for its own mana, which triggers Korvold's second ability yet again to draw you deeper into your deck. Finally, Zombie Infestation recycles those newly drawn cards into fresh Zombie tokens to keep the entire cycle spinning indefinitely.