Sedraxis Specter [Shards of Alara]

Flying
Whenever Sedraxis Specter deals combat damage to a player, that player discards a card.
Unearth 1B (1B: Return this card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.)