Necrotic Ooze + Boa Constrictor + Cinderhaze Wretch

Necrotic Ooze
Boa Constrictor
Cinderhaze Wretch

Requires
Necrotic Ooze must be on the battlefield. Boa Constrictor must be in the graveyard. Cinderhaze Wretch must be in the graveyard.
Steps
  1. Activate Necrotic Ooze using Boa Constrictor's ability by tapping it, giving it +3/+3 until end of turn.
  2. Activate Necrotic Ooze using Cinderhaze Wretch's second ability by putting a -1/-1 counter on it, untapping it.
  3. Repeat.
Results
Infinitely large Necrotic Ooze until end of turn.

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