Herald's Horn
The Lost Caverns of Ixalan Commander (LCC #304)
Herald's Horn
CMC: 3
Type
Artifact
Rules Text
As this artifact enters, choose a creature type.
Creature spells you cast of the chosen type cost 
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.
Printing
The Lost Caverns of Ixalan Commander (LCC #304)
uncommon
Illustrated by Jason Felix