Sneak Attack, Priest of Urabrask, and Hoverguard Sweepers

Prerequisites

• Sneak Attack on the battlefield
• Priest of Urabrask in hand
• Hoverguard Sweepers in hand
• available

Steps

1. Activate Sneak Attack by paying , putting Priest of Urabrask from your hand onto the battlefield
2. Priest of Urabrask enters the battlefield, adding
3. Activate Sneak Attack by paying , putting Hoverguard Sweepers from your hand onto the battlefield
4. Hoverguard Sweepers enters the battlefield, returning itself and Priest of Urabrask from the battlefield to your hand
5. Repeat

Results

• Infinite ETB
• Infinite LTB
• Infinite red mana
• Return any number of creatures to their owners' hands