Death Assassin

Level Up 2/1, Reach
Subdue ({t}: Declare a target creature. Both you and
the opposing player put the top card of the library into
the graveyard. Compare the converted mana cost. If
yours is higher than your opponent's, exile target creature, else this creature fights target creature.)
Death creatures display such offensive might that it
turns opponents' hearts to jelly and keeps them from attacking. - Balathustrius