Thinking of getting this for my WC, as i'm using him for buffing and to spam chant of life when party hp gets about 50%(fighting aoe grouped nuker mobs).
but was wanting some input as to rather its any good or not, haven't ever seen this on a actual weapon.
it just has a % chance of casting the HP regen buff (like SOES for BtB or focus 3) whether or not thats useful for you, you'll have to decide (prophets have this buff if you wish to try and see, IMO though, not worth it)
Thinking of getting this for my WC, as i'm using him for buffing and to spam chant of life when party hp gets about 50%(fighting aoe grouped nuker mobs).
but was wanting some input as to rather its any good or not, haven't ever seen this on a actual weapon.
Ok, first thing. IIRC, the chance to trigger the buff (HP Regen increase, which is the same as the skill that EE get) is only about 30%. (Mental Shield lands at 50% if I remember my Hellknife SA choices. Not sure the exact %, but Regen was definately lower than Mental Shield.)
Second thing. The buff will only land on the ONE person who you have targetted. It doesn't matter if your using a targetted buff or not. Just that you have a person targetted and that person is the one who can get the buff.
Once it lands the buff lasts a full 20 minutes.
Thirdly, the effect of the buff isn't all that spectacular. (Unlike Acumen...) IIRC, it's something along the lines of a few points per tick(s). So maybe instead of 12,12,13 you get 12,13,13 in HP regen. (Can't remember the level of the buff that SA is for each possible weapon.)
If you have it on something like a Hellknife, and use it in addition to VR, it's ok as some added insurance while you solo. It's almost useless as a party tool for a Warcryer or Overlord though, due to the nature of how they buff. It works a little better for single target buffers, given the more cast chances.
For a WC/OL, just spam Soul Shield if you want this or the Mental Shield Buff SA to stick and it doesn't hit the first time.
For your WC though, your probably far better off getting Mana Up and just using the extra MP to cast CoL once or twice more.
So, just to sum up since I actually think the OP believes this SA helps regen MP: it does not. All the SA which are called "Magic: <something>" give you a buff, in this case the "Regeneration" buff, which helps regen HP. As was said, only the S grade weapon MP regen SA actually helps getting back MP faster (IIRC like the SpS buff, so not all that spectacular).