This clever loop lets you turn a single initial strike into an infinite feedback loop of destruction, legal across formats like commander, legacy, modern, oathbreaker, and vintage. By using Deathless Angel to grant two opposing creatures indestructible, you create the ultimate punching bags that can absorb endless punishment without dying. When Toralf, God of Fury deals noncombat damage to one of these targets, its triggered ability checks the excess damage, which is supercharged by Neriv, Heart of the Storm doubling all damage dealt by creatures that entered the battlefield this turn. The resulting excess damage blasts the other indestructible target, triggering Toralf right back and bouncing the cycle infinitely between them until you choose to redirect the final blast for the win.