Cauldron Familiar + Ragost, Deft Gastronaut + Weapons Manufacturing + Mycosynth Lattice + Yahenni, Undying Partisan

Cauldron Familiar

Ragost, Deft Gastronaut

Weapons Manufacturing

Mycosynth Lattice

Yahenni, Undying Partisan

How it works

1. Cast Cauldron Familiar by paying .
2. When Cauldron Familiar enters, it and Weapons Manufacturing trigger.
3. Resolve the Cauldron Familiar trigger, causing each opponent to lose 1 life and you to gain 1 life.
4. Resolve the Weapons Manufacturing trigger, creating a Munitions artifact token.
5. Activate Yahenni by sacrificing Cauldron Familiar.
6. Activate Cauldron Familiar by sacrificing the Munitions, as it is a Food due to Ragost.
7. The Munitions triggers, dealing 2 damage to any target.
8. Resolve the Cauldron Familiar ability, returning it from your graveyard to the battlefield.
9. Repeat from step 2.

This looping masterpiece transforms ordinary battlefield permanents into an engine of endless attrition, anchored entirely by Mycosynth Lattice's global transformation which turns everything in play into an artifact. That baseline allows Ragost, Deft Gastronaut to blanket your entire board with the Food type, meaning the Munitions token generated by Weapons Manufacturing's trigger can immediately be sacrificed to return Cauldron Familiar from your graveyard. As the Familiar loops back and forth, its repeated entry triggers Weapons Manufacturing anew while Yahenni, Undying Partisan stands ready to sacrifice it, cleanly converting this endless cycle of life, death, and metallic recreation into lethal damage for your opponents.