Peregrin Took + Cleric Class + Leonin Elder + Scurry Oak

Peregrin Took

Cleric Class

Leonin Elder

Scurry Oak

How it works

1. Cause an artifact to enter the battlefield under your control.
2. Leonin Elder triggers, causing you to gain 2 life due to Cleric Class.
3. Cleric Class triggers, putting a +1/+1 counter on Scurry Oak.
4. Scurry Oak triggers, creating a 1/1 Squirrel creature token and a Food artifact token.
5. When the Food enters the battlefield, Leonin Elder triggers, causing you to gain 2 life.
6. Repeat from step 3.
7. Once you have infinite Foods, you may sacrifice them to Peregrin Took's ability.

This clever loop takes advantage of permanent replacement effects to snowball a single artifact entrance into an unstoppable cascade of value. Whenever an artifact hits the battlefield, Leonin Elder triggers your lifegain, which Cleric Class supercharges while simultaneously feeding Scurry Oak the +1/+1 counters it needs to spit out a Squirrel token and trigger Peregrin Took's replacement effect to throw an extra Food token into the mix. Because that new Food immediately restarts Leonin Elder's trigger, the entire engine self-sustains to generate infinite creature tokens, lifegain, and +1/+1 counters. Once your board is overwhelmingly large, you can simply cash in those endless Food tokens using Peregrin Took's activated ability to draw your entire deck.