When Uro enters the battlefield, its first and second abilities trigger, as well as Deadeye Navigator's soulbond ability.
Resolve the Deadeye Navigator trigger, pairing it and Uro.
Resolve the second Uro trigger, causing you to draw a card, gain 3 life, and put Azorius Chancery from your hand onto the battlefield.
When Azorius Chancery enters, it and Tiller Engine trigger.
Resolve the Tiller Engine trigger, untapping Azorius Chancery.
Holding priority, activate Azorius Chancery by tapping it, adding .
Resolve the Azorius Chancery trigger, returning it from the battlefield to your hand.
Activate Uro by paying 1, blinking it.
Repeat from step 2.
This magnificent loop turns Uro, Titan of Nature's Wrath into a self-sustaining engine by pairing it with Deadeye Navigator for repeated blinks. Each time Uro re-enters the battlefield, its triggers let you draw a card, gain life, and drop Azorius Chancery straight into play. The clever inclusion of Tiller Engine turns Azorius Chancery's natural drawback into an asset by untapping it, allowing you to float mana and bounce it right back to your hand before its own restriction forces a land sacrifice.