Agree with most of this but the example is incorrect; a legal Raikou with Extremespeed was distributed at Gamestop during a Gen IV event. (I know because I obtained one.) Note this is the only way (I know of) a Raikou can legally have Extremespeed. This particular Raikou was distributed shiny, in a cherish ball, at level 30, with OT Gamestp. Its other moves were Aura Sphere, Zap Cannon, and Weather Ball if I remember correctly! I can upload files if curious.