Most of the Pretenders the AI uses are usually well versed in Astral or favored commanders. So it would not be inconcievable for the AI to hoard gems (or better yet, store and alchemize upon need) in order to Dispel a powerful global. From what I see; if they are using their gem income, it's probably on empowerment.

Certain Globals I believe the AI should have an increasing chance per turn of it being effect to 'cheat' and know what it takes to Dispel and do what it takes to do it ASAP. Ones that come to mind are:

Illwinter (for any non-cold friendly nation)
Burden of Time (non-undead)
The Looming Hell
Gift of Nature's Bounty
Arcane Nexus
Thetis' Blessing (for water nations)
Wrath of the Sea (for anyone with more than 5 costal provinces)
Second Sun (for any non-heat friendly nation)
Utterdark (non-undead)
Well of Misery

Most should be self-explainatory. Other than that; the computer should try to dispel any gem producing Global as soon as it has a reasonable chance to do so.

[ December 16, 2003, 10:05: Message edited by: Zen ]