When Volcano Hellion enters, it triggers, dealing an arbitarily large amount of damage to you and a creature. The damage that would be dealt to you is dealt to Ill-Tempered Loner // Howlpack Avenger instead due to Pariah.
Ill-Tempered Loner // Howlpack Avenger triggers, dealing an arbitrarily large amount of damage to an applicable target.
This clever loop turns Volcano Hellion's self-inflicted life-total damage into a lethal weapon by turning the table on your own defenses. With Pariah redirecting all damage that would be dealt to you straight to the enchanted Ill-Tempered Loner // Howlpack Avenger, the Hellion's massive damage trigger is safely intercepted. Every point of damage meant for you instead fuels the Avenger's trigger, letting you chain that immense damage directly into your opponent's face for the win.