Legendary Creature — Elder Dragon 7/7, 2UUBBRR (8)
Special
Flying
At the beginning of your upkeep, sacrifice Nicol Bolas unless you pay {U}{B}{R}.
Whenever Nicol Bolas deals damage to an opponent, that player discards his or her hand.
Illus. Edward P. Beard, Jr.

10/1/2009: Nicol Bolas's third ability triggers whenever it deals damage to an opponent for any reason. It's not limited to combat damage.
Legal in Vintage (Type 1)
Legal in Legacy (Type 1.5)
Legal in Classic (MTGO)
Legal in Commander
Legal in Modern