Typically, a card that is both ITB and CBN is OP, and this is no exception. You realize that making it CBN means you can make a super FbtN band with this? We don't need any more cards like that. This would be a must in speed decks. Right now, there are five ups to ths:
Multi-color (I would make it bi or tri to stop duplicates in T2 but multi is too much)
ITB (I might take this off)
Draw 2 (I'd probably take this off to discourage speed a bit)
Band anyone you want (This seems like the main purpose of the card, so leave it)
CBN (I would take this off entirely to stop superultramegabands)
Or if you want to keep it so powerful, put a little tax on it.