How about Choose Destiny as the 8th level slot? It makes a better 8th than 9th level spell and seems to fit with the concept of leadership and making sound decisions.
Choose Destiny
( Races of Destiny)
Divination
Level: Destiny 9,
Components: V,
Casting Time: 1 swift action
Range: Personal
Target: You
Duration: 1 round/level
You gain a limited ability to discern a successful path for your actions.
For the duration of the spell, any time you make an attack roll, skill check, ability check, or saving throw, you may roll twice and select which die roll to use.