Herald's Horn C17-53/5075 (The List Reprints)

As this artifact enters, 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.

NM - $9.50
LP - $7.50
MP - $6.00
HP - $4.00
DMG - $2.00