Light of Promise + Distinguished Conjurer + Scurry Oak
Light of Promise
Distinguished Conjurer
Scurry Oak
Infinite creature ETBInfinite lifegain triggersInfinite lifegainInfinite creature tokensInfinite +1/+1 counters on a creature
How it works
Gain life.
Light of Promise triggers, putting a +1/+1 counter on Scurry Oak.
Scurry Oak triggers, creating a creature token.
When the creature token enters the battlefield, Distinguished Conjurer triggers, causing you to gain 1 life.
Repeat from step 2.
This loop transforms any initial burst of lifegain into a self-sustaining engine of growth and swarming tokens. Once you trigger Light of Promise, the resulting +1/+1 counter placed on Scurry Oak forces it to create a Squirrel token. That token's arrival on the battlefield immediately prompts Distinguished Conjurer to grant you 1 life, which cycles right back into Light of Promise to keep the entire sequence spinning autonomously.