Pay {G} and tap Imperious Perfect to create a 1/1 Elf.
The Elf enters untapping all creatures you control.
Repeat.

Infinite creature tokens

Infinite creature ETB

Infinite untap of creatures you control

Infinite mana creatures you control can produce

Intruder Alarm

Imperious Perfect

Activate Llanowar Elves by tapping it, adding {G}.
Activate Imperious Perfect by paying {G} and tapping it, creating a 1/1 Elf Warrior creature token.
Activate Ashnod's Altar by sacrificing the Elf Warrior, adding {C}{C}.
The Elf Warrior dies, triggering Faces of the Past, untapping all Elves and Warriors.
Repeat.

Infinite colored mana

Infinite colorless mana

Infinite death triggers

Infinite creature LTB

Infinite creature sacrifice triggers

Infinite untap of all Elves and Warriors

Faces of the Past

Ashnod's Altar

Llanowar Elves

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

Elvish Mystic

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

Phyrexian Altar

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

Combos with "Imperious Perfect"