Infinite +1/+1 counters on a creatureInfinite creature ETBInfinite creature tokensInfinite lifegainInfinite lifegain triggers
How it works
Gain life.
The Destined White Mage triggers, putting a +1/+1 counter on Scurry Oak.
Scurry Oak triggers, creating a creature token.
When the creature token enters the battlefield, Aunt May triggers, causing you to gain 1 life.
Repeat from step 2.
This loop is a masterclass in recursive lifegain and token generation, kicked off by any initial bump to your life total that triggers The Destined White Mage. That lifegain targets Scurry Oak with a +1/+1 counter, which in turn causes the Oak to spit out a brand new Squirrel token. The arrival of that token immediately prompts Aunt May to reward you with a point of life, looping right back into The Destined White Mage's ability to keep the cycle spinning infinitely.