Zathar, Potion Maker

Flash
{t}: Look at the top card in the target player's library.
You may choose to place it at the bottom of their
library or in their graveyard.
{u}{b}: Choose a creature, that creature can not
attack or block this turn. You may only use this
ability once per turn.
{u}{u}{b}{b}: Each player draws or discards cards until
they have only two cards in their hand.