Ore-Rich Stalactite // Cosmium Catalyst

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.)

1R, T: Choose an exiled card used to craft this artifact at random. You may cast that card without paying its mana cost.