Resolve the persist ability, returning it from your graveyard to the battlefield with a -1/-1 counter on it and at least one +1/+1 counter on it due to
Gorma.
Remove a +1/+1 counter and a -1/-1 counter from that creature as a state-based action.
Repeat.
Notes
Each loop,
Gorma will place an additional +1/+1 counter on the
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Persist Creature compared to the previous loop. This'll eventually result in both the
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Persist Creature and
Gorma having infinite +1/+1 counters on them.
Results
Infinite +1/+1 counters on a creature.
Infinite creature ETB.
Infinite creature LTB.
Infinite death triggers.
Infinite red mana.
Infinite creature sacrifice triggers.
Metadata
Bracket tag
SpicyBracket 3-4+
Probably 3 or 4, but hard to classify
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5
1 · Exhibition5 · cEDH
Bracket tags are estimated from the cards and results of each combo, as a guideline rather than a strict classification.