Donatello, the Brains + Herd Baloth + Phyrexian Altar

GU identity

Commander legal

The 3 combo pieces

• Donatello, the Brains
• Herd Baloth
• Phyrexian Altar

How to execute it

1. Put a +1/+1 counter on Herd Baloth.
2. Herd Baloth 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 Herd Baloth.
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