Celestial Wolf Lord, Blue Sirius

Level 6 DARK/Beast-Warrior Synchro Effect
2400 ATK / 1500 DEF

1 Tuner + 1 or more non-Tuner monsters
When this card on the field is destroyed and sent to the Graveyard: Target 1 face-up monster your opponent controls; it loses 2400 ATK.

Rulings – Yugipedia

Printings:

Shadow Specters: SHSP-EN090 (Ultra Rare) - 2013-11-08
2014 Mega-Tin Mega Pack: MP14-EN183 (Ultra Rare) - 2014-08-28

Prices:

Cardmarket: 0.12 €
TCGplayer: $ 0.46