Heliod, Sun-Crowned + Walking Ballista

Heliod, Sun-Crowned
Walking Ballista

Requires
All permanents on the battlefield. Walking Ballista has at least two +1/+1 counters on it. 1w available.
Steps
  1. Activate Heliod by paying 1w, giving Walking Ballista lifelink until end of turn
  2. Activate Walking Ballista's second ability by removing a +1/+1 counter, dealing 1 damage to any target
  3. Walking Ballista's lifelink triggers, causing you to gain 1 life
  4. Heliod triggers, putting a +1/+! counter on Walking Ballista
  5. Repeat from step 2
Results
Infinite damage. Infinite lifegain. Infinite lifegain triggers.