[Oversway]

I have this idea for 'spell slots'. Basically every unit gets a number of spell slots, and various spells take up slots when they are cast. Mostly buff type spells but perhaps other battlefield wide spells (wrathful skies, darkness, etc.) could take up slots

There are lots of things you can do with this:

- limits the number of buffs a mage can cast so you could allow more than 5 orders per commander
- stronger (or lower reasearch level) spells could take up more slots
- more tough strategic choices if other battlefield wide spells take up spell slots - you can have wrathful skies but its harder to protect the casting unit
- different units (especially pretenders) could have different number of spell slots
- some items could give (or use) extraspell slots

A way to do the UI would be to have another line of icons with the slots and what is occupying them. It would look similar to the icons for the various buffs now, but with boxes for the slots.