Vesperlark, Activated Sleeper, and Viscera Seer

Prerequisites

• Vesperlark on the battlefield
• Activated Sleeper in the graveyard
• Viscera Seer on the battlefield

Steps

1. Activate Viscera Seer by sacrificing Vesperlark
2. When Vesperlark dies, it triggers, returning Activated Sleeper from your graveyard to the battlefield as a copy of Vesperlark
3. Activate Viscera Seer by sacrificing Activated Sleeper
4. When Activated Sleeper dies, it triggers, returning Activated Sleeper from your graveyard to the battlefield as a copy of Vesperlark
5. Resolve the Viscera Seer ability, causing you to scry 1
6. Repeat from step 3

Results

• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers
• Infinite scry 1