Herald's Horn 304 (Commander: The Lost Caverns of Ixalan)

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 - $9.80
LP - $7.80
MP - $5.90
HP - $3.90
DMG - $2.00