Void Mistwalker

Menace, deathtouch, consume 4 (Whenever this creature attacks, reveal the top four cards of target opponent's library. You may exile target card from that players graveyard for each nonland card revealed this
way.)
One of the few known ways to combat the Void is to
starve it. With no organic or magical sustenance
nearby, the Void’s material growth will slow, until it eventually falls into a dormant state.