Bental, Heir to Chaos

X: Everyone casts a random nonland card from their hand. X is the number of players. A random player gains contol of Bental, Heir to Chaos.
0: Activate this only if you don't own Bental. Draw cards and gain life in any amounts up to his loyalty. Return him to his owner's control.
-20: Bental's owner gets an emblem with "All effects your opponents control choose random targets, ignoring shroud, hexproof, and protection."