The Enigma Jewel // Locus of Enlightenment

Legendary Artifact

The Enigma Jewel enters tapped. : Add . Spend this mana only to activate abilities. Craft with four or more nonlands with activated abilities (, Exile this artifact, Exile the four or more from among other permanents you control and/or cards in your graveyard: Return this card transformed under its owner's control. Craft only as a sorcery.)