Chromatic Orrery + Karn, Silver Golem + Umbral Mantle

C identity

Commander legal

The 3 combo pieces

• Chromatic Orrery
• Karn, Silver Golem
• Umbral Mantle

What must be in place

Chromatic Orrery does not have summoning sickness.

How to execute it

1. Activate Chromatic Orrery's first ability by tapping it, adding {5}.
2. Activate Karn by paying {1}, causing Chromatic Orrery to become an artifact creature until end of turn.
3. Activate Umbral Mantle's equip ability by paying {0}, attaching it to Chromatic Orrery.
4. Activate Chromatic Orrery by paying {3} and untapping it, giving it +2/+2 until end of turn.
5. Activate Chromatic Orrery's first ability by tapping it, adding {5}.
6. Repeat from step 4.
7. Once you have infinite mana, you may instead use Chromatic Orrery's second ability if you control a colored permanent.

What the combo produces

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