Treebeard, Gracious Host + Scurry Oak + Suture Priest

Treebeard, Gracious Host

Scurry Oak

Suture Priest

How it works

1. Gain life.
2. Treebeard's second ability triggers, putting that many +1/+1 counters on Scurry Oak.
3. Scurry Oak triggers, creating a 1/1 Squirrel creature token.
4. When the Squirrel enters the battlefield, Suture Priest triggers, causing you to gain life.
5. Repeat from step 2.

This loop thrives on a brilliant symbiotic cycle where every piece feeds the next to achieve infinite growth. Once you manage an initial instance of lifegain, Treebeard, Gracious Host steps in to channel that life into raw power, placing +1/+1 counters directly onto Scurry Oak. That influx of counters triggers Scurry Oak's ability to manufacture a 1/1 Squirrel creature token, which in turn brings Suture Priest into the engine by granting you 1 life upon entry. That newly gained life immediately restarts Treebeard, Gracious Host's trigger, closing the loop to generate infinitely large creatures, endless tokens, and unbounded life.