Activate Ashnod's Altar by sacrificing Swift Warkite, adding {C}{C}.
Cast Activated Sleeper by paying {2}{B}, choosing to have it enter the battlefield as a copy of Swift Warkite.
When Activated Sleeper enters the battlefield, it triggers.
Holding priority, activate Ashnod's Altar by sacrificing Activated Sleeper, adding {C}{C}.
Resolve the Activated Sleeper trigger, returning Activated Sleeper from your graveyard to the battlefield as a copy of Swift Warkite.
Repeat from step 3.

Infinite colorless mana

Infinite death triggers

Infinite creature ETB

Infinite creature LTB

Infinite creature sacrifice triggers

Swift Warkite

Activated Sleeper

Ashnod's Altar

Cast Glasspool Mimic by paying {2}{U}, choosing to have it enter the battlefield as a copy of Swift Warkite.
When Glasspool Mimic enters the battlefield, it triggers.
Holding priority, activate Ashnod's Altar by sacrificing Glasspool Mimic, adding {C}{C}.
Resolve the Glasspool Mimic trigger, returning Glasspool Mimic from your graveyard to the battlefield as a copy of Swift Warkite.
Repeat from step 2.

Glasspool Mimic // Glasspool Shore

Cast Protean Raider by paying {1}{U}{R}, choosing to have it enter the battlefield as a copy of Swift Warkite.
When Protean Raider enters the battlefield, it triggers.
Holding priority, activate Ashnod's Altar by sacrificing Protean Raider, adding {C}{C}.
Resolve the Protean Raider trigger, returning Protean Raider from your graveyard to the battlefield as a copy of Swift Warkite.
Repeat from step 2.

Protean Raider

Cast Phantasmal Image by paying {1}{U}, choosing to have it enter the battlefield as a copy of Swift Warkite.
When Phantasmal Image enters the battlefield, it triggers.
Holding priority, activate Ashnod's Altar by sacrificing Phantasmal Image, adding {C}{C}.
Resolve the Phantasmal Image trigger, returning Phantasmal Image from your graveyard to the battlefield as a copy of Swift Warkite.
Repeat from step 2.

Phantasmal Image

Cast Mirror Image by paying {2}{U}, choosing to have it enter the battlefield as a copy of Swift Warkite.
When Mirror Image enters the battlefield, it triggers.
Holding priority, activate Ashnod's Altar by sacrificing Mirror Image, adding {C}{C}.
Resolve the Mirror Image trigger, returning Mirror Image from your graveyard to the battlefield as a copy of Swift Warkite.
Repeat from step 2.

Combos with "Swift Warkite"