Eh. I've used it in Savage a couple of times to top off myself or a DPS when the healers are already dealing with shit that's going wrong. I've also used it in dungeons, in EX primals, in Alex Normal, etc. I really like the idea of the skill in that it lets you support the party; it's got very specific situations when it's actually useful though, many of which entail a dead healer. Overall it's very clunky to actually use, mostly because it's a 3 second cast on a class that's basically built to stand in front of the boss and let it punch them in the face.