Squee, Dubious Monarch + Breath of Fury + Hellraiser Goblin
Squee, Dubious Monarch
Breath of Fury
Hellraiser Goblin
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
Declare Squee and the creature with Breath of Fury attached as attackers.
Squee triggers, creating a 1/1 Goblin creature token that is tapped and attacking.
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 Goblin 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 continuous combat steps into an unstoppable engine by leveraging Squee, Dubious Monarch to supply fresh fodder every turn. When the creature enchanted by Breath of Fury deals combat damage, you sacrifice it to untap your board and grant an extra combat phase, sliding the Aura right onto the attacking 1/1 Goblin token that Squee generated. Meanwhile, Hellraiser Goblin ensures everything stays aggressive by giving your team haste and forcing them to attack, keeping the chain of extra combats rolling indefinitely.