Massimo, the Magician + Combat Celebrant + Cloudshift + Frostcliff Siege Combo

Cloudshift in your graveyard.

Massimo in hand or in the command zone.

Combat Celebrant and Frostcliff Siege on the battlefield (Frostcliff Siege with "Temur" chosen on the battlefield).

Combat Celebrant hasn't been exerted this turn.

An opponent cannot block creatures you control.

plus commander tax if applicable available

Cast Massimo by paying its mana cost plus commander tax if applicable.

When Massimo enters, it triggers, exiling Cloudshift from your graveyard and giving Massimo the listed ability.

Declare Massimo and Combat Celebrant as attackers, choosing to exert Combat Celebrant as it attacks.

Combat Celebrant triggers, untapping all other creatures you control and causing you to get an additional combat phase after this one.

Deal combat damage with Massimo. Its ability triggers, casting a copy of Cloudshift from exile without paying its mana cost.

Resolve Cloudshift, blinking Combat Celebrant.

Repeat from step 3 each combat phase.

Infinite combat damage

Infinite combat phases

Infinite creature ETB

Infinite creature LTB

Infinite magecraft triggers

Infinite mana creatures you control can produce

Infinite storm count

Infinite untap of creatures you control