Craft with two that share a card type 6 (6, Exile this artifact, Exile the two from among other permanents you control and/or cards from your graveyard: Return this card transformed under its owner's control. Craft only as a sorcery.)
Reverse Type:
Artifact
Apex Observatory enters the battlefield tapped. As it enters, choose a card type shared among two exiled cards used to craft it.
T: The next spell you cast this turn of the chosen type can be cast without paying its mana cost.
Though they had never left the Core, the Oltec knew the stars.
Near Mint - $0.70
Lightly Played - $0.60
Moderately Played - $0.50
Heavily Played - $0.50
Damaged - $0.40
Near Mint Spanish - $0.70
Lightly Played Spanish - $0.60
Moderately Played Spanish - $0.50
Heavily Played Spanish - $0.50
Damaged Spanish - $0.40
Foil Prices
Near Mint Foil - $1.50
Lightly Played Foil - $1.20
Moderately Played Foil - $1.00
Heavily Played Foil - $0.90
Damaged Foil - $0.80
Near Mint Foil Spanish - $1.50
Lightly Played Foil Spanish - $1.20
Moderately Played Foil Spanish - $1.00
Heavily Played Foil Spanish - $0.90
Damaged Foil Spanish - $0.80