I did for fun few minis now with upheaval and bone shatter ass AA. Not really optimal but i did o.k. and it was bit fun
with determination you have your heal(significant one) from refreshing stack every 5 sec and everytime you increase your stack number with ww you have your heal everytime you increase your stack number only but you refresh much faster - so you heal much faster when in the middle of the battle - more 'burst heal' = more survivability