[Arryn]

Originally posted by Kjeld:
It's now turn 20-40ish, there are hostile enemies at my borders, how should I spend my ressources and magic, how can I manage to keep my territorial integrity. ?

First and foremost: Province Defense! I use 21 for most border provinces, 31 for key ones (good magic sites or income 50+).

The other thing that helps is to use lots of summons. Most cost zero upkeep and supplies, which frees my gold and supplies for other things (like temples for dominion push). I use the low-strength summons (Call of the Wind, Army of the Dead, etc) as garrisons, and the good ones (trolls, etc) as shock troops.

Another tactic that helps is to use commander-killing (Wind Ride, Earth Attack, etc) and mass-damage (Fires from Afar, etc) spells on those AI stacks that threaten your borders. The AI will have a hard time attacking without commanders (or with fewer of them) and the mass murder spells will thin them out a bit. Just killing 10-20 out of a stack of 100+ may be enough to make the AI reconsider attacking you for a turn, which gives you yet another chance to hit the AI again.