Hi there, it seems like Arceus-Fairy can't learn Defog in the 2.6.2 version, I know it was reported before here: http://pokemon-online.eu/threads/arceus-fairy-defog.32580/ , but that was for earlier version of the client and it might have worked then (I didn't test) but it's definitely not working now. Teambuilder screen: http://puu.sh/lO0e7/679ecb1034.png