Chimeratech Fortress Dragon

Level 8 DARK/Machine Fusion Effect
0 ATK / 0 DEF

"Cyber Dragon" + 1+ Machine monsters
Cannot be used as Fusion Material. Must first be Special Summoned (from your Extra Deck) by sending the above cards from either field to the GY. (You do not use "Polymerization".) The original ATK of this card becomes 1000 x the number of Fusion Materials used for its Special Summon.

Rulings – Yugipedia

Printings:

Shonen Jump Vol. 7, Issue 3 promotional card: JUMP-EN031 (Ultra Rare) - 2009-03-01
Collectible Tins 2010 Wave 1: CT07-EN013 (Super Rare) - 2010-08-31
Battle Pack Tournament Prize Cards: BATT-EN015 (Starfoil Rare) - 2012-05-29
Premium Gold: Infinite Gold: PGL3-EN057 (Gold Rare) - 2016-03-17
Duelist Saga: DUSA-EN065 (Ultra Rare) - 2017-03-30
Legendary Dragon Decks: LEDD-ENB28 (Common) - 2017-10-05
Ghosts From the Past: The 2nd Haunting: GFP2-EN123 (Ultra Rare) - 2022-05-05
25th Anniversary Tin: Dueling Mirrors: MP24-EN022 (Quarter Century Secret Rare) - 2024-09-19

Prices:

Cardmarket: 1.59 €
TCGplayer: $ 1.13