Breath of Fury + Shaun, Father of Synths

UR identity

Commander legal

The 2 combo pieces

• Breath of Fury
• Shaun, Father of Synths

What must be in place

An opponent cannot block creatures you control.
Breath of Fury attached to any other creature you control that does not have summoning sickness.

How to execute it

1. Declare the legendary creature with haste and the creature with Breath of Fury attached as attackers.
2. Shaun's first ability triggers, creating a tapped and attacking token of the legendary creature with haste that isn't legendary.
3. Deal combat damage using the creature that has Breath of Fury attached.
4. Breath of Fury triggers, causing you to sacrifice the creature it is attached to, then attach Breath of Fury to the token copy of the legendary creature with haste, then causing you to untap all creatures you control and to get an additional combat phase after this one.
5. Repeat 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