Woe Strider, Thran Vigil, and Gravelgill Axeshark

Prerequisites

• Woe Strider on the battlefield
• Thran Vigil on the battlefield
• Gravelgill Axeshark on the battlefield

Steps

1. Activate Woe Strider by sacrificing Gravelgill Axeshark
2. When Gravelgill Axeshark dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it
3. Thran Vigil triggers, putting a +1/+1 counter on Gravelgill Axeshark
4. Resolve the Woe Strider ability
5. Repeat

Results

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