Imperious Perfect, Faces of the Past, Ashnod's Altar, and Elvish Mystic

Prerequisites

• Imperious Perfect on the battlefield
• Faces of the Past on the battlefield
• Ashnod's Altar on the battlefield
• Elvish Mystic on the battlefield
• Imperious Perfect and Elvish Mystic do not have summoning sickness

Steps

1. Activate Elvish Mystic by tapping it, adding
2. Activate Imperious Perfect by paying and tapping it, creating a 1/1 Elf Warrior creature token
3. Activate Ashnod's Altar by sacrificing the Elf Warrior, adding
4. The Elf Warrior dies, triggering Faces of the Past, untapping all Elves and Warriors
5. Repeat

Results

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