Ghalta, Stampede Tyrant + Cloudstone Curio + Mirror Box + Mirror Image

Ghalta, Stampede Tyrant

Cloudstone Curio

Mirror Box

Mirror Image

How it works

1. Cast Ghalta by paying 5.
2. When Ghalta enters the battlefield, it and Cloudstone Curio trigger.
3. Resolve the Cloudstone Curio trigger, returning Mirror Image to your hand if its on the battlefield, or returning nothing to your hand otherwise.
4. Resolve the Ghalta trigger, putting Mirror Image onto the battlefield as a copy of Ghalta from your hand.
5. When Mirror Image enters the battlefield, it and Cloudstone Curio trigger.
6. Resolve the Cloudstone Curio trigger, returning Ghalta to your hand from the battlefield.
7. Resolve the Mirror Image trigger, putting Ghalta onto the battlefield from your hand.
8. Repeat from step 2.

This loop turns the arrival of Ghalta, Stampede Tyrant into an infinite recursion engine by leaning heavily on Mirror Box to bypass the legend rule. With Mirror Box neutralizing the restriction on identical names, Mirror Image can safely enter the battlefield as a direct copy of Ghalta over and over again. Every single iteration is then greased by Cloudstone Curio, whose passive trigger catches each incoming copy and bounces the original Ghalta back to your hand, ready to be dropped right back onto the battlefield for free.