Grist, Voracious Larva // Grist, the Plague Swarm + Vorinclex, Monstrous Raider + Body Launderer + Hidden Herbalists + Yahenni, Undying Partisan

Grist, Voracious Larva // Grist, the Plague Swarm

Vorinclex, Monstrous Raider

Body Launderer

Hidden Herbalists

Yahenni, Undying Partisan

How it works

1. Activate Yahenni by sacrificing Body Launderer.
2. When Body Launderer dies, its second ability triggers, returning Grist, Voracious Larva from your graveyard to the battlefield.
3. When Grist, Voracious Larva enters the battlefield, it triggers, causing you to pay to exile it and return it to the battlefield as Grist, the Plague Swarm with six loyalty counters due to Vorinclex.
4. Resolve the Yahenni ability.
5. Activate Grist, the Plague Swarm's third loyalty ability by removing six loyalty counters from it.
6. Grist, the Plague Swarm is put into your graveyard as a state-based action due to having zero loyalty.
7. Resolve the Grist, the Plague Swarm ability, creating a token copy of each creature card in your graveyard that is a 1/1 Insect.
8. When the Grist, Voracious Larva and Hidden Herbalist tokens enter the battlefield, the Hidden Herbalist token triggers once and the Grist, Voracious Larva token triggers for each token created this way.
9. Resolve all Grist, Voracious Larva triggers, choosing not to pay.
10. Resolve the Hidden Herbalist trigger, adding .
11. Activate Yahenni by sacrificing the Grist, Voracious Larva token.
12. Repeat from step 1, sacrificing a Body Launderer token instead.

This clever graveyard loop uses Body Launderer as the engine to continuously recycle Grist, Voracious Larva, whose front face triggers upon entering from the graveyard to transform itself. The presence of Vorinclex, Monstrous Raider is what makes the whole sequence viable, doubling Grist's incoming loyalty counters so it immediately hits the six required to activate Grist, the Plague Swarm's ultimate ability right away. That ultimate floods your board with token copies of every creature in your graveyard—including a fresh Hidden Herbalists to generate green mana via revolt and additional copies of Grist, Voracious Larva to keep the chain going. Meanwhile, Yahenni, Undying Partisan acts as the willing executioner, providing a reliable sacrifice outlet to trigger Body Launderer's death ability and fuel the entire infinite loop.