Assassin's Trophy (Etched Foil)

Rulings

If the permanent's controller doesn't search their library, they don't shuffle their library. — If the target permanent is a legal target but isn't destroyed, most likely because it has indestructible, its controller may search their library. — If the target permanent is an illegal target by the time Assassin's Trophy tries to resolve, the spell doesn't resolve. No player searches their library. — If the permanent's controller doesn't search their library, they don't shuffle their library. — If the target permanent is a legal target but isn't destroyed, most likely because it has indestructible, its controller may search their library. — If the target permanent is an illegal target by the time Assassin's Trophy tries to resolve, the spell doesn't resolve. No player searches their library.