Jinnie Fay, Jetmir's Second + Dogmeat, Ever Loyal + Breath of Fury

Jinnie Fay, Jetmir's Second

Dogmeat, Ever Loyal

Breath of Fury

How it works

1. Declare the creature with Breath of Fury attached as an attacker.
2. Dogmeat's second ability triggers, creating a 2/2 Cat creature token with haste due to Jinnie Fay.
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 Cat 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.

This ingenious combat loop hinges on turning Breath of Fury into an infinite engine by leveraging token replacement effects. With Dogmeat, Ever Loyal on the field, whenever your enchanted or equipped creature attacks, it creates a Junk token, but Jinnie Fay, Jetmir's Second steps in to replace that Junk token with a swift 2/2 Cat token with haste. When your original attacker deals combat damage, Breath of Fury triggers its sacrifice-and-reattach routine, hopping over to the newly minted Cat token while granting you an extra combat phase and a full team-wide untap. By repeating this process for every subsequent combat phase, you secure infinite combat steps and infinite creature deaths, easily overwhelming your opponents.