Biomancer's Familiar + Umbral Mantle + Zhur-Taa Druid

GUR identity

Commander legal

The 3 combo pieces

• Biomancer's Familiar
• Umbral Mantle
• Zhur-Taa Druid

How to execute it

1. Activate Zhur-Taa Druid by tapping it, adding {G}.
2. Zhur-Taa Druid triggers, dealing 1 damage to each opponent.
3. Activate Zhur-Taa Druid by paying {1} and untapping it, giving it +2/+2 until end of turn.
4. Repeat.

What the combo produces

• Infinite damage
• Infinitely large creature until end of turn