Korvold, Fae-Cursed King + Animation Module + Pitiless Plunderer + Yahenni, Undying Partisan

Korvold, Fae-Cursed King

Animation Module

Pitiless Plunderer

Yahenni, Undying Partisan

How it works

1. Activate Yahenni by sacrificing another creature you control
2. When the creature dies, Pitiless Plunderer and Korvold's second ability trigger.
3. Resolve the Pitiless Plunderer trigger, creating a Treasure token.
4. Holding priority, activate the Treasure by tapping and sacrificing it, adding 1.
5. Resolve the Korvold trigger, putting a +1/+1 counter on it and draw a card.
6. Animation Module triggers, causing you to pay 1 to create a 1/1 Servo artifact creature token.
7. Resolve the Yahenni ability.
8. Repeat.

This elegant sacrifice loop transforms the synergy of your battlefield into an engine of relentless advantage, fueled by Yahenni, Undying Partisan acting as the outlet that feeds sacrifices to the graveyard. Each time a creature meets its end, Pitiless Plunderer steps in to generate the crucial Treasure token needed to fund the engine, while Korvold, Fae-Cursed King rewards every single sacrifice by drawing cards and growing larger. That very growth triggers Animation Module, turning the placement of +1/+1 counters into a fresh supply of Servo artifact creature tokens that can immediately be fed back into Yahenni to keep the loop spinning indefinitely.