[Twan]

Personnally when I buff AIs I use a mod to give them researchbonus on an immobile pretender or recuperation+immortality on a combat chassis + I set the god with max dominion and crazy scales.

And I only give them high earth magic (eventually other paths but with low levels only), so the AIs will only cast global without drawbacks for them (riches from beneath, mechanical militia, earth blood deep well...). Giving high water, air or death may be ultra detrimental to an AI (ex : Man casting eternal storm and wasting the archers, or a sea nation trapping its troops with "Sea of Ice" + all high death AIs tend to cast "Burden of Time" and "Utterdark").

Ie :

Mod

#newmonster 2800
#copystats 158
#name "AI Oracle"
#researchbonus 30
#end

#newmonster 2801
#copystats 156
#name "AI Cyclops"
#immortal
#regeneration 10
#heal
#end

Map
#god x "AI Oracle" (or "AI Cyclops")
#dominionstr 10
#mag_earth 10
#scale_chaos -3
#scale_lazy -3
#scale_unmagic -3
#end