Activate Supreme Inquisitor by tapping it, Stonybrook Schoolmaster, and any other three Wizards you control.
Stonybrook Schoolmaster triggers, creating a 1/1 Merfolk Wizard creature token.
When the Merfolk Wizard enters the battlefield, Intruder Alarm triggers, untapping all creatures.
Resolve the Supreme Inquisitor ability, causing you to search a player's library for five cards and exile them.
Repeat.

Exile each opponent's library

Exile your library

Infinite creature tokens

Infinite death triggers

Infinite ETB

Infinite LTB

Infinite mana creatures you control can produce

Infinite sacrifice triggers

Infinite untap of creatures

Infinite untap of creatures you control

Supreme Inquisitor

Stonybrook Schoolmaster

Intruder Alarm

Activate Supreme Inquisitor by tapping it, Stonybrook Schoolmaster, and any other three Wizards you control.
Stonybrook Schoolmaster triggers, creating a 1/1 Merfolk Wizard creature token.
Resolve the Supreme Inquisitor ability, causing you to search a player's library for five cards and exile them.
Activate Phyrexian Altar by sacrificing the Merfolk Wizard, adding one mana of any color.
When the Merfolk Wizard dies, Faces of the Past triggers, untapping all Merfolks and Wizards on the battlefield.
Repeat.

Infinite colored mana

Infinite untap of all Wizards and Merfolk

Faces of the Past

Phyrexian Altar

Activate Supreme Inquisitor by tapping it, Stonybrook Schoolmaster, and any other three Wizards you control.
Stonybrook Schoolmaster triggers, creating a 1/1 Merfolk Wizard creature token.
Resolve the Supreme Inquisitor ability, causing you to search a player's library for five cards and exile them.
Activate Ashnod's Altar by sacrificing the Merfolk Wizard, adding {C}{C}.
When the Merfolk Wizard dies, Faces of the Past triggers, untapping all Merfolks and Wizards on the battlefield.
Repeat.

Infinite colorless mana

Ashnod's Altar

Combos with "Supreme Inquisitor"