Cyberdark Dragon

Level 8 DARK/Machine Fusion Effect
1000 ATK / 1000 DEF

"Cyberdark Horn" + "Cyberdark Edge" + "Cyberdark Keel"
This monster cannot be Special Summoned except by Fusion Summon. When this monster is Special Summoned, select 1 Dragon-Type monster in your Graveyard and equip it to this card. This card gains ATK equal to the equipped card's ATK. This card gains 100 ATK for each Monster Card in your Graveyard. If this card would be destroyed by battle, the equipped monster is destroyed instead.

Rulings – Yugipedia

Printings:

Cyberdark Impact: CDIP-EN035 (Ultimate Rare) - 2006-11-15
Cyberdark Impact: CDIP-EN035 (Ultra Rare) - 2006-11-15
Duelist Pack: Zane Truesdale: DP04-EN014 (Super Rare) - 2007-03-07
Duel Terminal 5b: DT05-EN086 (Duel Terminal Rare Parallel Rare) - 2011-09-29
OTS Tournament Pack 9 (POR): OP09-PT027 (Common) - 2018-12-06
Legendary Duelists: Season 1: LDS1-EN036 (Common) - 2020-07-02
Structure Deck: Cyber Strike: SDCS-EN045 (Common) - 2021-10-14
Speed Duel GX: Duel Academy Box: SGX1-ENG23 (Common) - 2022-03-17

Prices:

Cardmarket: 0.02 €
TCGplayer: $ 0.07