MA Ulm - you called me a forge what?

[BesucherXia]

I have made some further SP tests. The friendly-fire calculation should be to blame.

First case, Smiths with only 10 units: They cast the spell like crazy, drove the enemy away.
Second, Smiths plus 80 extra units: They refused to cast any spells again after the enemy was surrounded.

Now I see the AI will only consider how much damage an art spell will bring to the both sides, but never understand the importance of those damage.
Besides, the AI are not likely to change their mind once they thought they should avoid hurting friendly units, even after all friend units have already gone...

A good lesson for me.