REDU format ruling
Silver Wing

Nearest-era rulings (Tengu, Sept 2011) — no REDU-specific archive exists.
Card effect (current official text)Equip only to a Level 8 or higher Dragon-Type Synchro Monster. Twice per turn, it cannot be destroyed by battle. If it would be destroyed by a card effect, you can destroy this card instead.
Rulings
- If a monster equipped with "Silver Wing" is equipped with "Blast Sphere" and would be destroyed during the Standby Phase, both "Blast Sphere" and "Silver Wing" are destroyed but the monster is not and no damage is inflicted.
- If "Silver Wing" and the monster it is equipped to would be destroyed by a card effect simultaneously, you cannot use the effect of "Silver Wing."
- Multiple copies of "Silver Wing" are not accumulative.
- Equipping two copies of "Silver Wing" to a single monster protects the monster from being destroyed by battle twice per turn, not four times.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the REDU forum — sourced change requests get reviewed.