Ore-Rich Stalactite (Extended Art)

T: Add R. Spend this mana only to cast an instant or sorcery spell. Craft with four or more red instant and/or sorcery cards 3RR // Cosmium Catalyst 1R, T: Choose an exiled card used to craft Cosmium Catalyst at random. You may cast that card without paying its mana cost.

Deep goblins laugh at humans' wands. They cast spells with their hammers.