Donatello, the Brains + Phyrexian Altar + Scurry Oak

GU identity

Commander legal

The 3 combo pieces

• Donatello, the Brains
• Phyrexian Altar
• Scurry Oak

How to execute it

1. Put a +1/+1 counter on Scurry Oak.
2. Scurry Oak triggers, creating a creature token and a Mutagen token due to Donatello.
3. Activate Phyrexian Altar by sacrificing the creature token, adding {1}.
4. Activate the Mutagen by paying {1}, tapping and sacrificing it, putting a +1/+1 counter on Scurry Oak.
5. Repeat from step 2.

What the combo produces

• Infinite +1/+1 counters on a creature
• Infinite creature LTB
• Infinite death triggers
• Infinite ETB
• Infinite sacrifice triggers