Chromatic Orrery + Myr Welder + Umbral Mantle

C identity

Commander legal

The 3 combo pieces

• Chromatic Orrery
• Myr Welder
• Umbral Mantle

How to execute it

1. Activate Myr Welder using Chromatic Orrery's ability by tapping it, adding {C}{C}{C}{C}{C}.
2. Activate Myr Welder by paying {3} and untapping it, giving it +2/+2 until end of turn.
3. Repeat.

What the combo produces

• Infinite card draw
• Infinite colorless mana
• Infinite draw triggers
• Infinite untap of creatures you control
• Infinitely large creature until end of turn