Leveling Sage

[Aaronock]

Pick TS or HD as your main mobbing skill.
Max Deluge, especially if you're hanging out with a Wiz to level. This way you get the longest duration and added strength you can give to water based skills. On top of that, it makes it fun as hell to waterball around with.

Try to fit in FD if you can like Albus suggested. If you haveta, I'd actually cut down Free Cast to 7 most and even FW to 7 most (but I don't VFW so I'm biased here!).