Ill-Tempered Loner // Howlpack Avenger, and Pain for All

Prerequisites

• Ill-Tempered Loner // Howlpack Avenger on the battlefield
• Pain for All in hand
• available

Steps

1. Cast Pain for All by paying , attaching it to an indestructible creature you control with power 1 or greater
2. When Pain for All enters, it triggers, causing the creature it's attached to to deal damage to another creature you control
3. Howlpack Avenger triggers, dealing that much damage to the indestructible creature
4. Howlpack Avenger and Pain for All trigger
5. Resolve the Pain for All trigger, dealing that much damage to each opponent
6. Resolve the Howlpack Avenger trigger, dealing that much damage to the indestructible creature
7. Repeat from step 4

Results

• Infinite damage