Breath of Fury + Gimli's Reckless Might + The Unbeatable Squirrel Girl
Breath of Fury
Gimli's Reckless Might
The Unbeatable Squirrel Girl
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
Declare the creature with Breath of Fury attached and The Unbeatable Squirrel Girl as attackers.
The Unbeatable Squirrel Girl triggers, creating a creature token.
Deal combat damage 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 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 loop relies on an infinite chain of combat phases fueled by sacrifice and token generation. You begin by attacking with The Unbeatable Squirrel Girl to churn out a 1/1 green Squirrel token, which provides a fresh body to receive Breath of Fury when your primary enchanted attacker connects and sacrifices itself. Gimli's Reckless Might quietly holds the engine together by granting all your creatures haste so they can immediately press the attack during the extra combat phases generated by Breath of Fury's trigger.