Herald's Horn [Commander Masters]

Set: Commander Masters Type: Artifact Rarity: Uncommon Cost: {3} As Herald's Horn enters the battlefield, choose a creature type.Creature spells you cast of the chosen type cost {1} less to cast.At the beginning of your upkeep, look at the top card of your library. If it's a creature card of the chosen type, you may reveal it and put it into your hand.