Aphetto Alchemist + Chromatic Orrery + Umbral Mantle

U identity

Commander legal

The 3 combo pieces

• Aphetto Alchemist
• Chromatic Orrery
• Umbral Mantle

What must be in place

Umbral Mantle attached to Aphetto Alchemist.
Aphetto Alchemist does not have summoning sickness.

How to execute it

1. Activate Chromatic Orrery's first ability by tapping it, adding {5}.
2. Activate Aphetto Alchemist by tapping it, untapping Chromatic Orrery.
3. Activate Aphetto Alchemist by paying {3} and untapping it, giving it +2/+2 until end of turn.
4. Repeat.
5. Once you have infinite mana, you may instead use Chromatic Orrery's second ability to draw infinite cards.

What the combo produces

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