Ill-Tempered Loner // Howlpack Avenger + Spitemare

Prerequisites

You have a way to deal damage to Spitemare. Spitemare has indestructible.

Steps

1. Deal damage to Spitemare
2. Howlpack Avenger and Spitemare trigger.
3. Resolve the Spitemare trigger, dealing that much damage to any target.
4. Resolve the Howlpack Avenger trigger, dealing that much damage to Spitemare.
5. Repeat from step 2.