So I'll post updated versions of the rules here, and would like at least one more player's input:



A sanctioned psyker can choose to activate any of his Minor or Discipline powers in one of three ways: Fettered, Unfettered, or Push. Rather than rolling a group of d10 equal to their psy rating, the Psyker makes a Focus Power action (length of action or type of action determined by that specific power).

For a Fettered Power, the character halves their Psy rating and compares this to the PT. If this number is greater than the PT the power is activated. There is no risk of Psychic Phenomenon.

For an Unfettered activation, the character rolls 1d100 against their WP + 5x Psyrating -(10 for every 5 points the PT is >10). If they roll a "double number" (ie 44, 55 ect) this activates a psychic phenomenon. Overbleed is calculated as every 10 by which the TN is beaten an overbleed of 5 occurs

For a Push activation, the character rolls as they would for Unfettered, but can choose to add additional levels to the Psy rating up to +3. However, a Push activation always activates Psychic Phenomenon, and will at +5 per "level pushed" to their phenomenon roll likely invoking a more dangerous phenomenon.

Anything that increase a Power Threshold in Dark Heresy, decreases Psy Rating in Rogue Trader. A rough guideline is that for every 4 points of increase in Threshold, lower the psy rating by 1.'

Talents or other abilities that allow a bonus to Power Rolls (such as Discipline Focus) instead add to Focus Power tests. Each +1 bonus to a Power Roll translates to +5 to the Focus Power Test.