Infinite creature ETBInfinite creature LTBInfinite combat damageInfinite combat phasesInfinite death triggersInfinite mana creatures you control can produceInfinite creature sacrifice triggersInfinite untap of creatures you control
How it works
Deal combat damage using the creature that has Breath of Fury attached and Magnus the Red, triggering Breath of Fury and Magnus the Red.
Resolve the Magnus the Red trigger, creating a creature token.
Resolve the Breath of Fury trigger, causing you to sacrifice the creature it is attached to, then attach Breath of Fury to a creature token, then causing you to untap all creatures you control and to get an additional combat phase after this one.
Repeat each combat phase.
This explosive extra-combat loop turns Magnus the Red into an unstoppable, damage-dealing engine by constantly chaining additional combat phases through Breath of Fury. As Magnus connects for damage, his *Blade of Magnus* ability creates a 3/3 red Spawn creature token, providing the exact host required when Breath of Fury sacrifices its previous bearer upon dealing combat damage to a player. Breath of Fury then untaps all of your creatures—a group whose haste from Barbarian Class's Level 3 lets them immediately rush back into the red zone—while Barbarian Class's level-one ability ensures your dice rolls are heavily manipulated if you choose to weave in other chaotic effects.