Baldur's Gate : The Sword Coast Chronicles : NWN2 Persistent World

I think that to make a stone root you need 30 skills point in Alchmey for only one stone root per reset that is to much i say more stone root or half of the 30 skills point

IIRC you can get another south of beregost somewhere in wyvern territorry. Maybe along the River of Chionthar too.

And as far as the numbers go. At least a high skill in alchemy is somewhat useful, mechanically.

you cant get 2 on the same time only one out those four there is know that means the server has to reset before you can pick one again only one of those four