Donatello, the Brains, Summoning Station, and Extruder

Prerequisites

• Donatello, the Brains on the battlefield
• Summoning Station on the battlefield
• Extruder 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 Extruder by sacrificing the Mutagen
3. Summoning Station triggers, untapping itself
4. Resolve the Extruder ability
5. Repeat

Results

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