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

Infinite LTB

Infinite ETB

Deadeye Navigator

Panharmonicon

Redcap Thief

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

Xorn

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

Emiel the Blessed

Zirda, the Dawnwaker

Activate Emiel the Blessed by paying {3}, blinking Redcap Thief.
When Redcap Thief enters the battlefield, it triggers twice, and Preston trigger twice if it has power 2 or less, or once otherwise.
Resolve both Redcap Thief triggers, creating two Treasure artifact tokens.
Resolve the first Preston trigger, creating a token copy of Redcap Thief that is a 0/1 Illusion.
When the Redcap Thief 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 "Redcap Thief"