Keep PW:S up at all times. Kite alot. Psychic Scream is your friend. Disperse when they pop CD's/begin a big damage burst, i.e Zealotry for paladin. You can also offensive dispell wings on a paladin. Spec so fade removes movement impairing effects 100% to remove slows. Oh and DP crits for like 10k sometimes the second you put it onthem, so when im kiting i like to re-cast it every now and then.