Cleric Class + Scurry Oak + Prosperous Innkeeper

Cleric Class

Scurry Oak

Prosperous Innkeeper

How it works

1. Gain life.
2. Cleric Class triggers, putting a +1/+1 counter on Scurry Oak.
3. Scurry Oak triggers, creating a creature token.
4. When the creature token enters the battlefield, Prosperous Innkeeper triggers, causing you to gain 2 life.
5. Repeat from step 2.

This delightful loop starts with any initial instance of lifegain, which Cleric Class amplifies into a +1/+1 counter placed upon Scurry Oak thanks to its second-level static buff. That counter immediately prompts Scurry Oak to spawn a 1/1 Squirrel token, and the arrival of this new creature causes Prosperous Innkeeper to trigger and reward you with life. Because Cleric Class increments that gained life even further, the cycle instantly feeds back into itself to generate limitless Squirrel tokens, boundless +1/+1 counters, and infinite life while Prosperous Innkeeper's initial Treasure token sits on the sideline as a bonus.