Missy, Protector of Books

First Strike
Whenever Missy, Protector of Books deals combat damage to a player reveal the top card of that player's library, then exile it with a nab counter.
Put a card with a nab counter in its owner's hand: Draw two cards.
Put a card with a nab counter in its owner's hand: Missy, Protector of Books can not be blocked this turn.