Viscera Seer, Wingrattle Scarecrow, and Hardened Academic

Prerequisites

• Viscera Seer on the battlefield
• Wingrattle Scarecrow on the battlefield
• Hardened Academic on the battlefield

Steps

1. Activate Viscera Seer by sacrificing Wingrattle Scarecrow
2. When Wingrattle Scarecrow dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it
3. Hardened Academic triggers, putting a +1/+1 counter on Wingrattle Scarecrow
4. Resolve the Viscera Seer ability
5. Repeat

Results

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