Just as stated,
+2 sec cooldown
+50% Max HP restored every 2 sec if she ever dodge.
If your dove have full dodge traits + the new talent + HC enhancement i guess yes it will make her impossible to kill.
There is a way to kill her but it's hard . Heros with malaise enhancement or silence.
Stealth and Survival using new enchantment not fun to think about either. Once in stealth, attack speed raised by 90% can't be targeted then add in new enchantment life drain effect. Whack heal whack heal.... Also get health % bonus from new enchantment. Then maybe heal up from survival. Use Ruduff to remove malaise. Things just get worse and harder once breakthrough level 80 comes out, even more hit points still can only take damage cap.
new talent release to used nimble crest on the heros cause nimble increasing dodge rate X%"
new talent its not important to dove but new enchantment will help for her
whatever thats what i think
u can try new talent on dove to check whats better for dove