Emperor's Passing

At the beginning of your end step, destroy target
creature who holds the title of Emperor. If you
control two or more creatures, no creature becomes
the new emperor You may search your library for
Trial By Stone, put it in your hand, then shuffle
your library.

"Mine! Ah mine! I, I, I. . . I am still ... Emperor!
I ah Ahh-" The remaining Skeksis lords leaned in to
watch as their emperor crumble into mere dust.
—SkekSo