Moritte of the Frost + Carrion Feeder

Moritte of the Frost
Carrion Feeder

Requires
Moritte of the Frost must be on the battlefield (as a copy of the creature with persist.). Carrion Feeder must be on the battlefield.
Steps
  1. Activate Carrion Feeder by sacrificing Moritte of the Frost.
  2. When Moritte of the Frost dies, it triggers its persist ability, returning itself to the battlefield as a copy of the creature with persist with two +1/+1 counters and one -1/-1 counter on it.
  3. Remove one +1/+1 counter and one -1/-1 counter from Moritte of the Frost as a state-based action.
  4. Resolve the activated ability from step 1, putting a +1/+1 counter on Carrion Feeder.
  5. Repeat.
Results
Infinite +1/+1 counters on Carrion Feeder. Infinite death triggers. Infinite ETB. Infinite LTB. Infinite sacrifice triggers.

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