Miquella, Coveted Empyrean

Whenever Miquella, Coveted Empyrean enters
the battlefield or attacks, you may search your
library for a land and put it onto the battlefield
tapped.
{2}{g}{g},{t}:Miquella, Coveted Empyrean becomes
a 0/3 Egg in addition to his other types and gains indestructible. He doesn't untap during his controller's next untap step.