As Cloud Key enters the battlefield, choose artifact, creature, enchantment, instant, or sorcery. Spells you cast of the chosen type cost {1} less to cast.
"A key only unlocks a door. Its wielder must choose whether to cross the threshold."
—*Hurkyl's Metaphysics, vol. II*
NM-Mint Foil - $250.00
Lightly Played Foil - $237.50
Moderately Played Foil - $225.00
Heavily Played Foil - $200.00
Damaged Foil - $162.50
NM-Mint Foil Non English - $250.00
Lightly Played Foil Non English - $237.50
Moderately Played Foil Non English - $225.00
Heavily Played Foil Non English - $200.00
Damaged Foil Non English - $162.50