Mirror-Mad Phantasm + Sakashima the Impostor

Mirror-Mad Phantasm

Sakashima the Impostor

How it works

1. Activate Sakashima the Impostor by paying 1, shuffling Sakashima the Impostor into your library and milling your entire library due to it not having a card named Mirror-Mad Phantasm in it.

This crafty little illusion pulls off a complete library dump by exploiting a technicality in how a clone finds its namesake. When Sakashima the Impostor enters the battlefield copying Mirror-Mad Phantasm, it takes on all of that creature's characteristics—including its activated ability—while keeping its own name, Sakashima the Impostor. Activating that ability then causes its owner to shuffle it away and reveal cards until a card named Mirror-Mad Phantasm is found, but because the clone is actually named Sakashima the Impostor, the search never matches and tears through the entire library, sending every single card straight to the graveyard.