Breath of Fury + Moira, Urborg Haunt

BR identity

Commander legal

The 2 combo pieces

• Breath of Fury
• Moira, Urborg Haunt

What must be in place

Breath of Fury attached to any nontoken creature you control that has haste.
You control at least one additional nontoken creature that has haste.
You have a way to kill the additional creature with haste.
An opponent cannot block creatures you control.
Moira does not have summoning sickness.

How to execute it

1. Kill the nontoken creature with haste that does not have Breath of Fury attached.
2. Deal combat damage to an opponent using Moira and the creature that has Breath of Fury attached, triggering Moira and Breath of Fury.
3. Resolve the Moira trigger, returning the nontoken creature with haste from your graveyard to the battlefield.
4. Resolve the Breath of Fury trigger, causing you to sacrifice the creature it is attached to, then attach Breath of Fury to the other nontoken creature with haste, then causing you to untap all creatures you control and to get an additional combat phase after this one.
5. Repeat from step 2 each combat phase.

What the combo produces

• Infinite combat damage
• Infinite combat phases
• Infinite creature LTB
• Infinite death triggers
• Infinite ETB
• Infinite mana creatures you control can produce
• Infinite sacrifice triggers
• Infinite untap of creatures you control