Breath of Fury + Death Tyrant + Fires of Yavimaya

Breath of Fury

Death Tyrant

Fires of Yavimaya

How it works

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.

This brilliant loop turns an endless series of combat steps into a relentless engine fueled by the battlefield-wide haste granted by Fires of Yavimaya. Whenever your enchanted attacker connects, Breath of Fury forces its own sacrifice to untap your army and grant an extra combat phase, while Death Tyrant immediately replaces the fallen creature with a fresh 2/2 Zombie token. You can then simply attach Breath of Fury right back to that newly minted Zombie, swinging over and over again for infinite combat damage, deaths, and triggers until the table falls.