Atem, King of Games

{t}: All {w} and {b} Duel Monster creatures you control gain +3/+2 until end of turn.
{w}{w}: Draw 1 card for each Duel Monster creature you control with a different name.
{b}{b}: Your opponent discards 1 card for each Duel Monster creature you control with a different name.
{w/b}{w/b}{w/b}{w/b}{w/b}: Play 1 Duel Monster creature from your hand without paying its mana cost.