Woe Strider, Wingrattle Scarecrow, and Hardened Academic

Prerequisites

• Woe Strider on the battlefield
• Wingrattle Scarecrow on the battlefield
• Hardened Academic on the battlefield

Steps

1. Activate Woe Strider 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 Woe Strider ability
5. Repeat

Results

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