Breath of Fury
Death Tyrant
Garna, the Bloodflame

   Prerequisites

What do I need to start this combo?
All permanents on the battlefield.
You control at least two additional creatures. An opponent cannot block creatures you control. Breath of Fury attached to a creature you control other than Death Tyrant.

   Steps

How does this combo work?
1
Deal combat damage using the creature that has Breath of Fury attached.
2
Breath of Fury triggers, causing you to sacrifice the creature it is attached to, then attach Breath of Fury to any creature you control except Death Tyrant, then causing you to untap all creatures you control and to get an additional combat phase after this one.
3
When the creature that had Breath of Fury attached dies, Death Tyrant triggers, creating a 2/2 Zombie creature token.
4
Repeat each combat phase.

   Results

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