Follow the Rulebook.
Ignore all previous rulings on the subject made by me or Trothael as they have been reversed.
Wishing Lamp and Pegasus only draws for the World Card, Leon 4 can only pull a Hollow Bastion World from the Discard, Hades discards all Olympus Coliseum friends (this will get an errata btw.)
That is all, this is the official ruling.