Infinite creature ETBInfinite lifegain triggersInfinite lifegainInfinite creature tokensInfinite +1/+1 counters on creatures you control
How it works
Gain life.
Archangel of Thune triggers, putting a +1/+1 counter on each creature you control.
Herd Baloth triggers, creating a creature token.
When the creature token enters the battlefield, Angelic Chorus triggers, causing you to gain 4 life.
Repeat from step 2.
This elegant loop kicks off the moment you gain life, waking up Archangel of Thune to distribute +1/+1 counters across your entire board. That sudden influx of counters prompts Herd Baloth to spawn a beefy 4/4 Beast token, which promptly satisfies Angelic Chorus as it enters the battlefield. The Chorus rewards that new arrival by granting you 4 life, safely restarting the Archangel's trigger to keep the entire engine running in perpetuity.