You want more Crit and Mastery, less haste, as a general rule. You should wear any other legendary than that belt as thats what on the worst rated ones. Try to pick of Prydaz, Roots, Velens, or Soul of the Farseer. Save bonus rolls for tier bosses, you'll want to pick up some of those set pieces asap. 2 piece set bonus is rated very highly, 4 piece is decent. Check on shaman discord for more specific recommendations.
Im looking for a macro, hope you guys can help me, the macro need to look something like, if i mouse over on a friendly player it use the heal BUT if i mouse over an enemy it use X spell, it is possible for such macro? thanks