Atem, King of Games

Black wizards you control ignore the legendary rule.
+1 You get an emblem with "{t} During your upkeep, you may search your deck for a card, and place it
on top of your library." If you already have this emblem, draw a card instead.
-3 Planeswalkers you control gain indestructible if
you control at least three others that are not Atem.
-10 Mill target opponent's library