Ygra, Eater of All + Cauldron Familiar + Insidious Roots + Umbral Collar Zealot

Ygra, Eater of All

Cauldron Familiar

Insidious Roots

Umbral Collar Zealot

How it works

1. Activate Cauldron Familiar by sacrificing a Food.
2. Ygra triggers, putting two +1/+1 counters on it.
3. Resolve the Cauldron Familiar ability, returning it from your graveyard to the battlefield.
4. Cauldron Familiar and Insidious Roots trigger.
5. Resolve the Insidious Roots trigger, creating a creature token and putting a +1/+1 counter on each Plant you control.
6. Resolve the Cauldron Familiar trigger, causing each opponent to lose 1 life and you to gain 1 life.
7. Activate Umbral Collar Zealot by sacrificing Cauldron Familiar.
8. When Cauldron Familiar dies, Ygra triggers, putting two +1/+1 counters on it.
9. Resolve the Umbral Collar Zealot ability.
10. Repeat.

This loop turns your graveyard into an engine of continuous life drain by exploiting Ygra, Eater of All, which transforms every creature on the battlefield into a Food artifact. With Ygra's presence, Cauldron Familiar can sacrifice itself or any other creature to fuel its own return from the graveyard, while also growing Ygra with massive piles of +1/+1 counters. Meanwhile, Insidious Roots watches those creature cards leave your graveyard to flood the board with Plant tokens that can tap for mana, and Umbral Collar Zealot provides the clean sacrifice outlet to send the cat right back to the graveyard.