Soul Mantle, Spidersilk Robe

I haven't seen an ES chest unique and totems are a bit harder to reach from the right side of the Skilldrasil, so I'd like to design a unique that covers those in an interesting way. (And people have been asking for a Shaman class, maybe this would serve?)

But much more than that, I'd love a rather chaotic cursed property (defined below) on the item as it's very "me" and I think it would be more than a little amusing. I like the idea of giving someone an awesome bonus but flicking them and their allies periodically for its use. :)

I'm not very good with builds (haven't been here long) so I'm kinda curious what people would do with this.. hopefully not completely break the concept, but perhaps it's late-game enough to be alright.

---------------
Soul Mantle (?) ...or perhaps Chaos Mantle?
---------------
endgame viable-ish ES
….- not sure what range this is, but should be lower than that on higher-level rares.
---------------
Chance for self and allies to take some random damage type every several seconds
+1 Totem
Socketed skills supported by mid-level(/quality?) Totem
(more? spell damage, increased aoe/totem range, faster projectiles, -15 to -20% all resist, …?)
---------------
"Oops?" - <Unknown>.
….- perhaps there's an old evil-ish/crazy(?) character in the story who crafted items long ago and this was a mistake, given the curse? …or was it?
....- I really don't know what to use for flavour text, but this does seem rather fitting.. lol
---------------

Concept points:
- late or endgame ES chest piece
….- haven't seen one yet and it fits well with the right-side totem build
….- usable as early as possible but preferably capable of six sockets
- "curse" self and allies in a fairly large totem-like radius
….- the mantle is essentially a -1 (or hostile) totem centred on the player
….- should be enough damage to be aware of and have to gear or flask for occasionally but neither too deadly nor trivial. Somewhat less than the health drain from bears?
….- should pretty much guarantee an ES recharge interruption occasionally (existing passives to reduce chance by time/delay)
….- say, for a random number example, 50% chance every 3s to deal <damageType-specific range> <damageType> (ie: 1-200 lightning) damage to self and each player in range. Perhaps decrease damage by proximity, where the wearer takes the full and more troublesome amount. (Or it could pick wearer plus a random target more frequently with 100% chance?)
....….- point is to deal damage of all elements, physical, and chaos so the damage is unpredictable, harder to hard-counter in gear, and you can't get 100% immunity to it short of a regen build (but it would still eat into such a build's effectiveness).
….- probably turn effect off in towns just like all skills are disabled, but not necessarily
- enables flexible multi-totem build on right side of Skilldrasil
….- I expect some folk will get three totems, maybe four if they really dig for the distant node depending on start location (..not sure if there are other uniques that increase totems?)
….- the totem support mod allows folk to have one great or multiple viable totems of respectable (not longest) duration on their action bar as they will without the need to level and fit several Totem and accompanying support gems

Graphical appearance:
- tattered silk-like mantle with webbed sleeves
….- jet black with somewhat lighter charcoal highlights
….- perhaps some silken shine, in places, coming through a general worn appearance
- much like this: http://en.wikipedia.org/wiki/File:1871_dolman.jpg
….- but moderately distressed and much less bulk beneath the mantle.. perhaps even just shorts/pants.
….- might be of some help w.r.t. texturing/distressing (though it seems to lack the cool sleeves shown above): http://www.liveauctioneers.com/item/6348342
- maybe a black version of the Occultist's Vestment in the meantime?