Activate Corsair Captain by paying {1}{U}, blinking it.
When Corsair Captain enters, it and Deadeye Navigator's soulbond ability trigger twice.
Resolve both Deadeye Navigator triggers, repairing it and Corsair Captain.
Resolve both Corsair Captain triggers, creating two Treasure tokens.
Activate both Treasures by tapping and sacrificing them, adding {1}{U}.
Repeat.

Infinite artifact ETB

Infinite artifact LTB

Infinite artifact sacrifice triggers

Infinite creature LTB

Infinite creature ETB

Deadeye Navigator

Corsair Captain

Panharmonicon

Activate Corsair Captain by paying {1}{U}, blinking it.
When Corsair Captain enters, it and Deadeye Navigator's soulbond ability trigger
Resolve the Deadeye Navigator trigger, repairing it and Corsair Captain.
Resolve the Corsair Captain trigger, creating two Treasure tokens.
Activate both Treasures by tapping and sacrificing them, adding {1}{U}.
Repeat.

Xorn

Activate Ashnod's Altar by sacrificing Corsair Captain, adding {C}{C}.
Corsair Captain dies, triggering Nim Deathmantle, causing you to pay {4} to return Corsair Captain from your graveyard to the battlefield, and attach Nim Deathmantle to it.
Corsair Captain enters the battlefield, creating two Treasure tokens.
Activate two Treasure tokens by tapping and sacrificing those, adding two mana of any color.
Repeat.

Infinite death triggers

Infinite creature sacrifice triggers

Nim Deathmantle

Ashnod's Altar

Activate Emiel the Blessed by paying {1}, blinking Corsair Captain.
When Corsair Captain enters the battlefield, it triggers, creating a Treasure artifact token.
Activate the Treasure by tapping and sacrificing it, adding {1}.
Repeat.

Emiel the Blessed

Training Grounds

Activate Emiel the Blessed by paying {3}, blinking Corsair Captain.
When Corsair Captain enters the battlefield, it triggers twice, and Preston trigger twice if it has power 2 or less, or once otherwise.
Resolve both Corsair Captain triggers, creating two Treasure artifact tokens.
Resolve the first Preston trigger, creating a token copy of Corsair Captain that is a 0/1 Illusion.
When the Corsair Captain token enters the battlefield, it triggers twice, creating two Treasure tokens.
Repeat from step 4 for the remaining Preston trigger, if applicable.
Activate three Treasures by tapping and sacrificing them, adding {3}.
Repeat.

Combos with "Corsair Captain"