When you gain the status of Great Druid, its a great honor, but what exactly do you archieve? I've read somewhere that you gain special powers, but i can't figure out what they do. Can anyone tell me this ?
If I remember well you should also get some immunities/resistances: at 15th you become immune to poison, at 18th, 21st and 24th lev. you gain 10% res. to the 4 elemental dmg.. Don't know if the resistance gains stops at 24th lev. or continue every 3 lev.
According to the manual, every druid in ToB gains that. And as you only can reach lvl14 in SoA, I doubt that the great druid thingie has something to do with that.