Red Hulk + Grand Crescendo + Spitemare

Red Hulk

Grand Crescendo

Spitemare

How it works

1. Give Red Hulk and Spitemare indestructible using Grand Crescendo.
2. Deal damage to Red Hulk.
3. Red Hulk triggers, putting a +1/+1 counter on it and dealing damage to Spitemare.
4. Spitemare triggers, dealing damage to Red Hulk.
5. Repeat from step 3.

This loop relies on an unbreakable chain of damage fueled by Grand Crescendo granting indestructible to your entire team, allowing Red Hulk and Spitemare to safely ping each other infinitely. Once that protective foundation is set, dealing initial damage to Red Hulk triggers its enrage ability to grow with a +1/+1 counter and strike Spitemare, which in turn triggers its damage redirection right back at Red Hulk. Because both creatures shrug off the lethal blow thanks to Grand Crescendo, this fiery feedback loop generates infinite +1/+1 counters and an arbitrarily large amount of damage to close out the game.