Agatha's Soul Cauldron + Walking Ballista + Nearheath Stalker

Agatha's Soul Cauldron
Walking Ballista
Nearheath Stalker

Requires
Agatha's Soul Cauldron must be on the battlefield. Walking Ballista must be in exile (exiled by Agatha's Soul Cauldron). Nearheath Stalker must be on the battlefield.
Steps
  1. Activate Nearheath Stalker using Walking Ballista's second ability by removing a +1/+1 counter from it.
  2. Repeat step 1 until Nearheath Stalker has no +1/+1 counters on it.
  3. Resolve all Nearheath Stalker abilities dealing 1 damage to Nearheath Stalker, and any remaining damage to any target(s).
  4. Nearheath Stalker dies as a state-based action due to having 0 toughness.
  5. Nearheath Stalker's undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
  6. Repeat.
Results
Infinite death triggers. Infinite ETB. Infinite LTB.

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