Deadeye Navigator, Relic of Legends, and Agatha of the Vile Cauldron

Prerequisites

• Deadeye Navigator on the battlefield
• Relic of Legends on the battlefield
• Agatha of the Vile Cauldron on the battlefield

Steps

1. Activate Relic of Legends' second ability by tapping the legendary creature that's paired with Deadeye Navigator, adding
2. Activate the legendary creature by paying due to Agatha of the Vile Cauldron, blinking it
3. When the legendary creature enters, Deadeye Navigator's soulbond ability triggers, repairing the legendary creature and Deadeye Navigator
4. Repeat

Results

• Infinite ETB
• Infinite LTB