Odd-Eyes Phantom Dragon

Level 7 PS 4 DARK/Dragon Pendulum Effect
2500 ATK / 2000 DEF

[ Pendulum Effect ]
Once per turn, when an attack is declared involving your face-up monster and an opponent's monster, if you have an "Odd-Eyes" card in your other Pendulum Zone: You can make that monster you control gain 1200 ATK until the end of the Battle Phase (even if this card leaves the field).

[ Monster Effect ]

When this Pendulum Summoned card inflicts battle damage to your opponent by attacking: You can inflict damage to your opponent equal to the number of "Odd-Eyes" cards in your Pendulum Zones x 1200. You can only use this effect of "Odd-Eyes Phantom Dragon" once per turn.

Rulings – Yugipedia

Printings:

Yu-Gi-Oh! ARC-V Volume 1 promotional card: YA01-EN001 (Ultra Rare) - 2017-04-04
Legendary Dragon Decks: LEDD-ENC03 (Common) - 2017-10-05

Prices:

Cardmarket: 0.25 €
TCGplayer: $ 0.20