Herald's Horn [Warhammer 40,000] Goblin Rogue When Oblivion Ring leaves the

When Oblivion Ring leaves the battlefield

When Lich's Mastery leaves the battlefield

Packaging:

{T}: Target permanent you control becomes the color of your choice

that creature's controller may play that card and they may spend mana as though it were mana of any color to cast that spell

Herald's Horn [Warhammer 40,000] Goblin Rogue When Oblivion Ring leaves theSet: Warhammer 40,000 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.