Your search for "Gryphon Wing SDP-050" revealed the following:
Gryphon Wing - SDP-050 - Super Rare - Unlimited from Starter Deck: Pegasus Unlimited, available at 401 Games Canada. Rarity: Super Rare Card Text:When your opponent activates "Harpie's Feather Duster", all of your opponent's Spell and Trap Cards are destroyed...
Gryphon Wing - SDP-050 - Super Rare - 1st Edition from Starter Deck: Pegasus 1st Edition, available at 401 Games Canada. Rarity: Super Rare Card Text:When your opponent activates "Harpie's Feather Duster", all of your opponent's Spell and Trap Cards...