I think we should accept the fact that anything we design will not be revised over the teletalk wands this turn. Arstotzka is almost certainly going to try something to slow our advance in the plains, and combining that with the teletalk wands not being cheap might cause us to lose our hold there.
Based on the description provided, I'd say they're cheap enough. Making them even cheaper wouldn't offer much more of an advantage- what is the common soldier going to do with a Teletalk rod, even if he could use it?
I think our lead in the plains is so substantial that unless they can come up with some sort of jamming device for our Teletalkers, we should be able to hold on.
The ballista is a good thought, but based on experience I think constructing a brand new piece of seige equipment (which would be vulnerable to fireballs) and layering multiple enchantments on it would be asking for trouble.
The key here is incrimental developments.
You're right. Design a basic ballista first, then add enchantments later.
Catapult first then? Especially since we can go to town launching whatever.
Whilst technically a simpler design, I feel like our experience designing the recurve bows may aid us more in the creation of a ballista. They don't work in exactly the same way, but there are similarities.
Design: Storm Strike
This spell is Moskurgs first foray into weather magic that uses more than wind, and their first serious Main Battle Spell. A massive, roiling storm is called forth overhead, clouds dark and imposing, striking fear into the hearts of the enemy. Pouring rain leaves fields nothing more than pits of mud, making marching difficult and snuffing out fireballs. Winds scream across the land, leaving backs bent and even blowing careless men from mountain tops. Awe-inspiring pillars of white-hot plasma strike the ground with thunderous booms, crashing down amongst enemy troops like the hammer of God. This spell is the righteous fury of Moskurg incarnate.
Priorities in order of most to least important:
1) Lots of rain. Lots of lightning. Lots of wind.
2) Controllable enough not to harm friendlies.
This seems a bit ambitious. Creating such a powerful storm from whole cloth would probably be beyond our abilities. I was thinking more along the lines of blowing existing storms away from our forces and towards the enemy, and maybe creating small storms if we roll well when designing it.
I especially think the bit about lightning is going too far. Lightning Bolt
* would be its own spell, I feel, one that would be equivalent to their fireballs.
Tentative Order?
Move al-Mutriqa to the plains. DO NOT CEDE GROUND. MOSKURG DEPENDS ON YOU.
Hmm. Maybe. That would be a basically free way to reinforce the plains.