Gengar

Intimidate, ward - discard a card and lose 2 life.
Mega evolve 2
Whenever gengar becomes tapped, target opponent you attacked this turn exiles the top card of their library and a non land card from their hand. You may play those cards this turn and you may cast them using mana of any color. If gengar has mega evolved, that opponent exiles two cards from their hand and library instead.