@Tsu

So it's SUPPOSED to be used in between battles? if it heals like FSC HP pads, that''s no good... not unless you and your party just LOVE to chat...

It is supposed to be used, but not as a zone of invulnerability. The slow healing and potential to backfire (heal enemies) is meant as a discouragement to use it unless absolutely necessary.

@Ufana

Yes, not only hard, it's even considered "impossible". Which is why it's been pretty much established in every single one of the 100 threads about it, that there will never be such a thing in this game under any circumstances.

And yet, we have guardian shields...

I don't see any inherent reason why it should be impossible to balance such a bomb, in fact, I find it rather easy: Make it reasonably unobtainable for new players (e.g. 4* craft only, recipe must be bought with krogmo coins). Those players who can get their hands on it will likely shun it because it costs them one weapon slot to carry and will slow them down considerably in most cases.

How will it affect gameplay?

Arenas will not be affected at all. You can't plant the HH in the battle zones without healing your enemies and there are health pads in between battle zones anyways.

Clockwork tunnels (and CW like levels)? Sure, you can drop a HH in between every segment. You will quickly stop doing so, though, after realizing how much this will slow you down.

Wolver dens and lichens lairs? Those are basically arenas with clockwork tunnels instead of healing pads in between them. Same reasoning applies.

Boss battles? You'd hate Vanaduke running through your haze and getting an instant heal from it. The same goes for the other bosses except twins (here, the scuttle bots will become a real nuisance).

Pre boss levels? Anyone ending up at the final elevator now, not having 3 pills in their belt anyways?

Anything else: well, you can most certainly drop a HH before stepping on the elevator and ensure full health, but, again, this costs you tons of time and since all non boss strata are random levels, does not help you seeing content that would otherwise be inaccessible for you.

The only real impact, a HH has is probably heat sharing. But that system is broken anyways in countless ways.

I must say, I feel a bit flattered, that I am apparently attention worthy :).

@Orangeo

You could just camp at the start of a level and heal. Completely overpowered, even at one-star. OOO has already said that they won't put healing weapons in the game. However buffing weapon are quite open to debate.

Yes, you could camp in between levels and heal, you could even so in between fights. Here is my point, though: It doesn't matter.

• Non boss strata consist of random, depth scaled and disjointed levels. The HH may help you to reach greater depths (so does having a 5* player in your party, btw) than you could normally reach without, but whatever level is at depth X could also be at depth 1 in another gate -> you are not burning through content much faster.
• My proposal is for a slow healing device. Endgame players would barely use it for the same reason, they would barely use the shivermist in firestorm: It slows them down. New players would not use it, because they don't have access to it (4* krogmo craft). Anything in between will simply stall themselves (potentially resulting in a slower crown spawn rate).
• Boss runs are not really affected. There are usually plenty of health pads/drops around to keep you going and I can't remember when I was on a boss run last where ppl would enter the boss stage without being full on pills. Of course, the HH might help you in e.g. "Red carpet runabout" to save pills, but it stands to reason that if you can't make it through there with your normal health, then the Jelly will annihilate you, in case you go down just because you still have max pills.

Of course, the above begs the question: "What use is the Health Haze?" and the answer is: It works for mixed groups of different skill levels and for PUGs, where you have no idea about with whom you are playing. As it is now, you are facing a big decision when reviving less skilled players: Be nice and sacrifice some of your health, so they can play, or simply solo the rest of the level, leaving them in spectator mode. Personally, I'd rather rev and drop a HH than to have them nagging for revs (or feeling like a jerk for leaving them dead).