From Unofficial Ansalon Wiki
On Ansalon, various attributes affect the results you get when achieving a new level. Intelligence affects how much mana you gain, Wisdom affects how many practices you receive, dexterity affects how many movement points you get, and Constitution affects how many hit points you get. Because of this, having all of your attributes at maximum is very important. The equipment you receive from the Mudschool should maximize all your attributes, but it is important to make sure as you continue on and improve your equipment that having your attributes maximized is crucial.