Elvish Mystic + Faces of the Past + Imperious Perfect + Phyrexian Altar

GU identity

Commander legal

The 4 combo pieces

• Elvish Mystic
• Faces of the Past
• Imperious Perfect
• Phyrexian Altar

What must be in place

Imperious Perfect and Elvish Mystic do not have summoning sickness.

How to execute it

1. Activate Elvish Mystic by tapping it, adding {G}.
2. Activate Imperious Perfect by paying {G} and tapping it, creating a 1/1 Elf Warrior creature token.
3. Activate Phyrexian Altar by sacrificing the Elf Warrior, adding one mana of any color.
4. The Elf Warrior dies, triggering Faces of the Past, untapping all Elves and Warriors.
5. Repeat.

What the combo produces

• Infinite colored mana
• Infinite creature LTB
• Infinite death triggers
• Infinite ETB
• Infinite sacrifice triggers
• Infinite untap of all Elves and Warriors