Alena, Kessig Trapper + Encroaching Mycosynth + Voltaic Construct

UR identity

Commander legal

The 3 combo pieces

• Alena, Kessig Trapper
• Encroaching Mycosynth
• Voltaic Construct

What must be in place

You had a creature with power 3 or greater enter the battlefield this turn.

How to execute it

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

What the combo produces

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