Encroaching Mycosynth + Viridian Joiner + Voltaic Construct

GU identity

Commander legal

The 3 combo pieces

• Encroaching Mycosynth
• Viridian Joiner
• Voltaic Construct

How to execute it

1. Activate Viridian Joiner by tapping it, adding at least {3}.
2. Activate Voltaic Construct by paying {2}, untapping Viridian Joiner.
3. Repeat

What the combo produces

• Infinite green mana
• Infinite untap of artifact creatures you control