Infinite combat damageInfinite combat phasesInfinite death triggersInfinite creature ETBInfinite creature LTBInfinite mana creatures you control can produceInfinite creature sacrifice triggersInfinite untap of creatures you control
How it works
At the beginning of your combat phase, Mishra triggers, creating a token copy of any nonlegendary nooncreature artifact you control that is a 4/4 Construct named Mishra's Warform with haste.
Deal combat damage to an opponent using the creature that has Breath of Fury attached.
Breath of Fury triggers, causing you to sacrifice the creature it is attached to, then attach Breath of Fury to the Mishra's Warform 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 clever loop turns the mechanical redundancy of Mishra, Eminent One into an endless parade of combat steps, fueled entirely by the aggressive reattachment of Breath of Fury. Every time your enchanted creature connects for combat damage, Breath of Fury forces its sacrifice to chain itself onto the fresh Mishra's Warform token created at the start of combat, instantly granting you a completely untainted additional combat phase and untapping your entire board. Because Mishra's Warform arrives ready to attack with haste as a 4/4 Construct artifact creature, it can immediately pick up the Aura and repeat the cycle.