Uro, Titan of Nature's Wrath, Deadeye Navigator, Izzet Boilerworks, and Spelunking

Prerequisites

• Uro, Titan of Nature's Wrath in hand
• Deadeye Navigator on the battlefield
• Izzet Boilerworks 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 Izzet Boilerworks from your hand onto the battlefield
5. When Izzet Boilerworks enters the battlefield untapped due to Spelunking, it triggers
6. Holding priority, activate Izzet Boilerworks by tapping it, adding
7. Resolve the Izzet Boilerworks 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