Maestroke the Symphony Djinn

Level 4 DARK/Fiend Xyz Effect
1800 ATK / 2300 DEF

2 Level 4 monsters
Once per turn: You can detach 1 Xyz Material from this card, then target 1 face-up Attack Position monster your opponent controls; change it to face-down Defense Position. If a "Djinn" Xyz Monster you control would be destroyed, you can detach 1 Xyz Material from that monster instead.

Rulings – Yugipedia

Printings:

Starter Deck: Xyz Symphony: YS12-EN043 (Super Rare) - 2012-04-13
Astral Pack Three: AP03-EN002 (Ultimate Rare) - 2013-09-13
Star Pack 2014: SP14-EN031 (Common) - 2014-02-21
Star Pack 2014: SP14-EN031 (Starfoil Rare) - 2014-02-21

Prices:

Cardmarket: 0.14 €
TCGplayer: $ 0.86