Chord of Calling (Japanese) [Secret Lair Drop Series] 50 (Each {U} in the mana

(Each {U} in the mana costs of permanents you control counts toward your devotion to blue

x1] [End of Your Turn] Set this Character as active

Visit the local market and conduct a foreign trade

you'll find:

Chord of Calling (Japanese) [Secret Lair Drop Series] 50 (Each {U} in the manaSet: Secret Lair Drop Series Type: Instant Rarity: Rare Cost: {X}{G}{G}{G} Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.) Search your library for a creature card with mana value X or less, put it onto the battlefield, then shuffle. You never really know when a new Miku fan might make an appearance.