Your search for "skyline predator 50" revealed the following:
Skyline Predator (Foil) (RTR) from Return to Ravnica, available at 401 Games Canada. Rarity: Uncommon Finish: Foil Artist: Wesley Burt Card Text:Flash (You may cast this spell any time you could cast an instant.)Flying
Skyline Predator (RTR) from Return to Ravnica, available at 401 Games Canada. Rarity: Uncommon Finish: Normal Artist: Wesley Burt Card Text:Flash (You may cast this spell any time you could cast an instant.)Flying