Here's very vague images ripped from the game for his custom moves
Dunno why they gave him all this electric crap, Fire or Ice woulda been perfect.
I think that might even be a water arrow...seriously?
Source:
http://imgur.com/a/OfWa9
More:
http://www.reddit.com/r/smashbros/comments/2gpoyh/images_of_interest_from_the_ssb3ds_rom/
Analysis:
The Bomb seems to have a giant variation and, based on the video clip posted by the guy above me, the other customization causes the bomb to meteor smash.
Looks like the arrow has a water/ice variation, and possibly a quicker/no charge variation.
The sword spin attack has a lightning/stun variation. and what looks like a variation that increases recovery height significantly.