REDU format ruling
Chimeratech Fortress Dragon

Nearest-era rulings (Tengu, Sept 2011) — no REDU-specific archive exists.
Card effect (current official text)"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
- Since this card can't be used as Fusion Material, you cannot Summon Chimeratech Fortress Dragon using another copy of it as material.
- You can always use face-down monsters you control as Fusion Material (but not ones your opponent controls).
- You can't use Tokens as Material for this card.
- If this card's effect is negated, its ATK becomes 0 (permanently)
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the REDU forum — sourced change requests get reviewed.