One of the BoM Cell Doctrines is "Sanction Warden".

In short, the Training enables the other members of the group to attack the psyker when s/he is about to cause a phenomena.
A reaction is spend for this. If the attack does damage, the whole psychic power is negatet AND there is no phenomena.

So far, so clear, so useable for all the littel puritans out there..and for the psyker players who end up with players whose pc tend
to shot him in the head for the slightest of phenomena..

The intersting point (at least, to me!) is that these rules indicate that a psyker can be kept from using his powers if a sever distraction/interruption
of concentration (like... well, actual damage!) is applied at a crucial moment.

Taken a little further, this could enable one to stop an enemy psyker from using his powers if applied at this "crucial moment". Of course, the trick
would be to identify said crucial moment.

What do you think of this? Would you say that this is possible or would you say that one would need to be very familiar with said psyker (like his sanction wardens are) to be able to hit at the right moment?

Gregorius21778 said:

I think for most purposes I would have such an event cause the psyker to make a WillPower test or lose control of the power he or she was casting.

As far as this ability however, I am not too fond of it, it seems to be too much padding for the PC party. And it should be a commissar unique ability, IMHO.

But at least it is an interesting rule.

Gregorius21778 said:

First: The Cell may make an attack when the Psyker would roll on the Perils of the Warp table, not the Psychic Phenomena .

Second: It makes no stipulations to being able to "shoot the Psyker" at any other time.

Third: I think it was meant to be Psykers the cell has worked closely with for at least a modest period of time. I do not believe it is intended to be used to shutdown enemy Psykers or Sorcerers. That last said, if an enemy Warp-user is going to generate a Perils roll, I may allow an operative from a Sanction Wardens cell to use Suffer not the Witch . It seems more a sense of "that's WAY more warp-energy than s/he should be channeling, quick smack him awake" sort of thing.

Take from that what you will.

-=Brother Praetus=-

Brother Praetus said:

Hi Praetor,

of course this cell doctrine is not intended to be in act against other psykers. The rules are clear about this. What it is interesting to me is the way they do it and how it turns out.

Damage stops the psyker from working .

The cell doctrine only uses it to prevent the party-psyker from coming up with perils. Anything else would not make sense. Nobody tries to hinder a team-member from doing his job.

But the mechanik and reason behind it.

The peril is stopped by damage applied to the psyker (I guess, at a crucial moment) which undoes all of his doing (the psypower he tried is nullified as well).

My reasoning: if an amount of training enables cell members to interrupt their psyker under very specific circumstance (the cell members notice that a peril will be coming!), then an amount of training should enable people (npc and/or pc) to interrupt psykers in more general circumstances (he uses a power)

After all, this what this attack is all about. Isn´t it?

Gregorius21778 said:

I'm not saying your idea or thought process is wrong here. I personally wouldn't introduce a mechanic that mirrors the D20 "disrupt casting" effect for Psykers. Unless the Psyker is using Invocation or generates Phenomena or Perils there is generally no obvious tell tale that they are manifesting a power; dependent on the power of course. That said, Sorcerers are a rather different beast, all together. But it ultimately just doesn't feel right to me.

-=Brother Praetus=-

Eh, personally I tend to portray psykers as showing some obvious manifestation signs (barring the power specifically designed to be used for stealth/social), since fluffwise it doesn't tend to go too unnoticed. But its really up to GM because it has and does go whatever way the author/GM/whoever feels like, since that's basically how the warp goes.

I would just treat it as both the Psyker and the group have specific training, so Psyker responds to that and excess power bleeds off.

Brother Praetus said: