Cloud Key

Artifact - (rare)

As Cloud Key enters the battlefield, choose artifact, creature, enchantment, instant, or sorcery.
Spells you cast of the chosen type cost  less to cast.

The musical sound of its turning triggers the tumblers of revelation.

Price

tcgplayer 3.18

cardkingdom 2.99

cardsphere 2.32

cardmarket 1.75