Gah, just started training my Sigilyph, and 6 levels later, remembered it didn't have Magic Guard. Time to catch another one (and box this one, to be traded on the GTS later).
Also, is it just me, or are 5th gen's shiny colours generally lame? There's a few awesome ones (e.g. Haxorus), but most of them just strike me as garish or really un-colour-coordinated. 4th gen was the best for shiny colours IMO (even taking into account Garchomp).
EDIT: Why the Meganium hate? It's my favourite 2nd gen starter appearance-wise (being the only one that isn't just a bigger and meaner version of its first form).
Oh, and Water starters for life! Other than Feraligatr