A spell that would speed up your regen rate would be good.... Make you regen every 2.5-3 minutes or double the amount of troops you get every 5 .... Just an idea
Would have to be a very large amount of mith for small amount of time period for it to fit in with xtals and such.
I still think there should be a spell that targets an opponents spell and cancels it. A dispel spell. Of course it would cost maybe twice the mith as the spell its targeted at. Would make things interesting, can't just go to sleep and assume your mith wall will remain up. The faster regen spell would be nice too. It would have to be VERY expensive to cast though to maintain balance.