Voidcaster Adept

Pulse (Whenever you cast an instant or sorcery spell, you get {e}.)
Pay {e}{e}{e}: Reveal the top card of your library and put it into your hand. Then discard a card. If the discarded card has a greater converted mana cost than the revealed card, Voidcaster Adept deals 2 damage to target creature or player.
Many seek the ability to withstand the void, but those who possess it go mad.