Welcome on deckstats.
As far as I know turning a morphed creature faceup does not count as entering the battlefield.
Willbender entered the battlefield the moment you played it as morph - though it wasn't identified as wizard (since morph does not give a creature type).
Also turning a creature face up is an activated ability and not a cast.
Maybe someone can post the correct rules text, since I'm browsing via smartphone where researching is quite annoying.