Cyber Dragon Zwei

Level 4 LIGHT/Machine Effect Monster
1500 ATK / 1000 DEF

If this card attacks an opponent's monster, it gains 300 ATK during the Damage Step only. Once per turn: You can reveal 1 Spell in your hand; this card's name becomes "Cyber Dragon" until the End Phase. This card's name becomes "Cyber Dragon" while in the GY.

Rulings – Yugipedia

Printings:

Absolute Powerforce: ABPF-EN035 (Rare) - 2010-02-12
Cyber Dragon Revolution Structure Deck: SDCR-EN004 (Common) - 2014-02-06
Legendary Dragon Decks: LEDD-ENB02 (Common) - 2017-10-05
Structure Deck: Cyber Strike: SDCS-EN004 (Common) - 2021-10-14

Prices:

Cardmarket: 0.11 €
TCGplayer: $ 0.05