Spell casting routine is seriously screwed?

[konming]

I would hate to have my air mage to cast arrow fend instead of fog warrior in a decisive battle.

Since this was a test game, I was able to rerun it several time. Sometimes the mage does cast army of lead but most of the time he just cast army of gold. And I do not think it is the fatigue either. Because after army of lead he only has 70 some fatigue, not exactly 200+.

What's wierder is that in one rerun, E6 mage casted army of gold and then army of lead (script: army of lead), and A6 guy casted arrow fend then fog warrior (script: fog warrior).

Due to the randomness of the result, I have to think that this is a bug. A very bad one as well.