Psyniscience

Advanced
Perception
You can use the Psyniscience skill to become attuned with the ebb and flow of the warp and the immaterium. The most common application of this Skill is to detect the presence or absence of Daemons or other psykers. To do so, make a Psyniscience Test. On a success, you extend your senses out to a number of metres equal to your Perception Bonus plus 1d10. Each degree of success allows you to add 1d10+PB metres to your roll.
You can also Test to detect unusual psychic phenomena, areas where realspace has been “disrupted”, areas where the immaterium seems to be blocked (or shielded against), and so on. The GM may wish to make the Test in secret depending on just what it is that the psyker may detect.
The results of any Psyniscience Test are summarised on the following table:

Degrees of Success	Result
Standard Success	Awareness that the immaterium is being disrupted.
One	General location from where the phenomena emanates.
Two+	Exact location of the individual channelling or blocking the immaterium.

Using Psyniscience is a Full Action.

Detailed Disruption

Instead of merely detecting the number of locations or individuals causing a disruption in the immaterium, you may focus your senses to glean a little more information about them as follows. You may split your degrees of success between table chart and the table above.

Degrees of Success	Result
One	The general strength of the phenomena (more or less powerful than you).
Two+	The precise strength, nature and origin of the phenomena.

Diminish Psychic Attack

Psyniscience allows you to perceive the intricate weaves of power involved in the manifestation of a Psychic Power. Whenever you are the target of a Psychic Power, you may make a Very Hard (–30) Psyniscience Test. If you succeed, you negate the effects of any of the power’s Overbleed.

Sense Lifeforms

Every living creature leaves a psychic signature in the warp, and careful use of Psyniscience can allow you to detect the presence or absence of normal creatures. You may make a Difficult (–10) Psyniscience Test in place of an Awareness Test.