Egyptian Rat Screw

Starting with you, each player puts the top card of his or her library into a pile face up. If a player smacks the pile while two cards which share a card type are on top of the pile, that player puts all of those cards into his or her hand, then takes an extra turn after this one.
If a player smacks the pile when they shouldn't, that player discards his or her hand and skips his or her next turn.