Breath of Fury + Squirrel Squatters + Urabrask the Hidden
Breath of Fury
Squirrel Squatters
Urabrask the Hidden
Infinite combat damageInfinite combat phasesInfinite creature tokens with hasteInfinite death triggersInfinite creature ETBInfinite creature LTBInfinite 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 Squirrel Squatters as attackers.
Squirrel Squatters triggers, creating at least one 1/1 Squirrel creature token that is tapped and attacking.
Deal combat damage to an opponent using the creature with Breath of Fury attached.
Breath of Fury triggers, causing you to sacrifice the creature it is attached to, then attach Breath of Fury to a Squirrel token, untap all creatures you control and get an additional combat phase after this one.
Repeat each combat phase.
This Commander combo sets up an infinite combat loop by repeatedly recycling Breath of Fury onto the fresh bodies generated by Squirrel Squatters. Because Urabrask the Hidden gives all your creatures haste, the newly minted tokens and your attackers are immediately ready to strike again during the extra combat phases granted by the Aura. Each time the creature enchanted with Breath of Fury connects for combat damage, you sacrifice it to move the enchantment to a newly created Squirrel, untapping your board and starting the process anew for infinite combat steps and token generation.