Uro, Titan of Nature's Wrath, Deadeye Navigator, Azorius Chancery, and Spelunking

Prerequisites

• Uro, Titan of Nature's Wrath in hand
• Deadeye Navigator on the battlefield
• Azorius Chancery in hand
• Spelunking on the battlefield
• available

Steps

1. Cast Uro by paying
2. When Uro enters the battlefield, its first and second abilities trigger, as well as Deadeye Navigator's soulbond ability
3. Resolve the Deadeye Navigator trigger, pairing it and Uro
4. Resolve the second Uro trigger, causing you to draw a card, gain 3 life, and put Azorius Chancery from your hand onto the battlefield
5. When Azorius Chancery enters the battlefield untapped due to Spelunking, it triggers
6. Holding priority, activate Azorius Chancery by tapping it, adding
7. Resolve the Azorius Chancery trigger, returning it to your hand from the battlefield
8. Activate Uro by paying , blinking it
9. Repeat from step 2

Results

• Infinite card draw
• Infinite draw triggers
• Near-infinite ETB
• Near-infinite landfall triggers
• Near-infinite lifegain
• Near-infinite lifegain triggers
• Near-infinite LTB