Aurelia, the Warleader + Displacer Kitten + Spellbinder

Aurelia, the Warleader

Displacer Kitten

Spellbinder

How it works

1. Declare Aurelia and the creature with Spellbinder attached as attackers.
2. Aurelia triggers, causing you to untap all creatures you control and to get an additional combat phase after this one.
3. Deal combat damage using the creature that has Spellbinder attached.
4. Spellbinder triggers, causing you to copy a card exiled with it, and cast the copy without paying its mana cost.
5. Displacer Kitten triggers, blinking Aurelia.
6. Resolve the spell cast in step 4.
7. Repeat each combat phase.

This loop relies on Aurelia, the Warleader to generate an endless sequence of combat phases and untap your entire board, providing the initial aggression and repeated attacks needed to get rolling. As your creatures swing, the creature equipped with Spellbinder sneaks through to deal combat damage, triggering the equipment to cast a free copy of the instant card it holds in exile. That cast immediately triggers Displacer Kitten, whose avoidance ability blinks Aurelia out and back onto the battlefield as a fresh permanent. Because Aurelia enters anew, her first-attack trigger resets for the upcoming extra combat phase, allowing you to chain limitless attacks, infinite spell casts, and endless creature triggers together.