Breath of Fury
Sharding Sphinx
Thopter Engineer

   Prerequisites

What do I need to start this combo?
All permanents on the battlefield.
Breath of Fury attached to another artifact creature you control. An opponent cannot block creatures you control.

   Steps

How does this combo work?
1
Deal combat damage to an opponent using the creature with Breath of Fury attached, triggering Breath of Fury and Sharding Sphinx.
2
Resolve the Sharding Sphinx trigger, creating a 1/1 Thopter artifact creature token.
3
Resolve the Breath of Fury trigger, causing you to sacrifice the creature it is attached to, then attach Breath of Fury to the Thopter token, then causing you to untap all creatures you control and to get an additional combat phase after this one.
4
Repeat each combat phase.

   Results

What do I get from this combo?
Infinite combat damage
Infinite combat phases
Infinite death triggers
Infinite ETB
Infinite LTB
Infinite mana creatures you control can produce
Infinite sacrifice triggers
Infinite untap of creatures you control
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