huh, damage yourself in pvp? thats weird, especially when it appears that 2-3 people focus on one of your clothies
shadow form is good ability since it improves your damage done, reduces phisical damage incoming and after all you can use small heals in shadow form and got vampiric embrace
I can guarantee that 5 healers vs 5 mages will fail. Basically because no one can survive 5 fireballs and 5 fireblasts. Even with bomb healing.