Donatello, the Brains, Summoning Station, and Mutagen Man, Living Ooze

Prerequisites

• Donatello, the Brains on the battlefield
• Summoning Station on the battlefield
• Mutagen Man, Living Ooze on the battlefield

Steps

1. Activate Summoning Station by tapping it, creating a 2/2 Pincher creature token and a Mutagen token due to Donatello
2. Activate the Mutagen by paying due to Mutagen Man, tapping and sacrificing it
3. Summoning Station triggers, untapping it
4. Resolve the Mutagen ability, putting a +1/+1 counter on a creature you control
5. Repeat

Results

• Infinite +1/+1 counters on creatures you control
• Infinite ETB
• Infinite creature tokens