if you're smart and use tactics, you can easily heal up to 1k+ hp in less than around 3 seconds (not sure about exact time, but it's pretty fast).
if you ask anyone i know, i'm the biggest pw fanboi and i honestly can't stand when people bash this class. it is by far the best dagger overall. 1v1 against a th? ofc they will have a low chace of winning, but hey.. sometime's you just get luck. 1v1 around any other class? you're sure to have a victory.