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

Infinite LTB

Infinite ETB

Deadeye Navigator

Panharmonicon

Exhibition Magician

Activate Exhibition Magician by paying {1}{U}, blinking it.
When Exhibition Magician enters, it and Deadeye Navigator's soulbond ability trigger
Resolve the Deadeye Navigator trigger, repairing it and Exhibition Magician.
Resolve the Exhibition Magician 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 Exhibition Magician.
When Exhibition Magician 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 Exhibition Magician.
When Exhibition Magician enters the battlefield, it triggers twice, and Preston trigger twice if it has power 2 or less, or once otherwise.
Resolve both Exhibition Magician triggers, creating two Treasure artifact tokens.
Resolve the first Preston trigger, creating a token copy of Exhibition Magician that is a 0/1 Illusion.
When the Exhibition Magician 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 "Exhibition Magician"