Geas doesn't really do anything you can't do with other enchantments (Such as dominate spells). I agree that the slot would be better used for something that you can't duplicate with your current spell list
Geas deals 3d6 damage a day, and you guys heal 20 hp a day from natural healing, and the sickened can be removed by or negated by alot of different effects, or ignored because its not that big.
And I did post 6 PHB spells that could be useful to you as well (Like greater heroism)
I didn't think that I'd be using my spells against regular students... That and I tried to build the character as he naturally might work out going up from 1st level...
I'm officially closing recruitment tommorow when I get off work (aproximatly 34 hours from now). Any new submissions need to be in the rogues gallery and have their first actions posted by then.