Ore-Rich Stalactite

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 (3RR, Exile this artifact, Exile the four or more from your graveyard: Return this card transformed under its owner's control. Craft only as a sorcery.) // 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.