Constellar Praesepe

Rank 4 LIGHT/Machine XYZ Monster
2400 ATK / 800 DEF

2 Level 4 "Constellar" monsters
Once per turn, during the Damage Step of either player's turn, when a "Constellar" monster you control is attacking or being attacked: You can detach 1 Xyz Material from this card; that monster gains 1000 ATK, until the End Phase.

Rulings – Yugipedia

Printings:

Duel Terminal 7b: DT07-EN088 (Duel Terminal Super Parallel Rare) - 2013-02-01
Hidden Arsenal 7: Knight of Stars: HA07-EN061 (Secret Rare) - 2013-04-26

Prices:

Cardmarket: 0.62 €
TCGplayer: $ 0.76