Peregrin Took + Cauldron Familiar + Thermopod + Insidious Roots

Peregrin Took

Cauldron Familiar

Thermopod

Insidious Roots

How it works

1. Activate Thermopod's second ability by sacrificing Cauldron Familiar, adding .
2. Activate Cauldron Familiar by sacrificing a Food, returning Cauldron Familiar to the battlefield from your graveyard.
3. Cauldron Familiar and Insidious Roots trigger.
4. Resolve the Insidious Roots trigger, creating a 0/1 green Plant creature token and a Food artifact token, and then putting a +1/+1 counter on each Plant you control.
5. Resolve the Cauldron Familiar trigger, causing each opponent to lose 1 life and you to gain 1 life.
6. Repeat

This looping engine turns a simple cat-and-oven style sacrifice loop into a boundless cascade of value by leveraging replacement effects and graveyard triggers. The heart of the machine is Cauldron Familiar continuously slipping out of your graveyard by sacrificing a Food, which immediately triggers Insidious Roots to spawn a 0/1 green Plant creature token as it leaves the graveyard. Meanwhile, Thermopod provides the necessary red mana by letting you sacrifice the cat, while Peregrin Took acts as a crucial multiplier that ensures every token-creation event churns out an extra Food token to keep the sacrifice fuel flowing.