Breath of Fury, Threefold Thunderhulk, and Concordant Crossroads

Prerequisites

• Breath of Fury on the battlefield
• Threefold Thunderhulk on the battlefield
• Concordant Crossroads on the battlefield
• Threefold Thunderhulk has power 1 or greater
• Breath of Fury attached to any other creature you control
• An opponent cannot block creatures you control

Steps

1. Declare Threefold Thunderhulk and the creature with Breath of Fury attached as attackers
2. Threefold Thunderhulk triggers, creating a number of 1/1 Gnome artifact creature tokens equal to its power
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 a Gnome token, then causing you to untap all creatures you control and to get an additional combat phase after this one
5. Repeat each combat phase
6. If Threefold Thunderhulk has power 2 or greater, this combo will net creature tokens

Results

• 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
• Infinite creature tokens with haste