I almost always spread Balance or Arrow, Spear sometimes. I use LA at about 50% MP with CO. (or if the stars align, I use it after I pop The Spear to myself.). Sometimes I stack regen from AH and AB to myself and tank and cast CU near the tank. For DPS, if there are 3 or more mobs I use Gravity. If there's only 2, I cast Combust II followed by Combust I, and then Malefic II till it dies or till the tank needs my healing again.