"Английский WD про псисилы, картинки" http://3.bp.blogspot.com/-eBwAPfo3xSE/T-OR.../Scan010001.jpg http://1.bp.blogspot.com/-WNUhUNt5DrQ/T-OS.../Scan010002.jpg http://4.bp.blogspot.com/-aWeBWf9lapY/T-OS.../Scan010003.jpg http://3.bp.blogspot.com/-6NUiu2xaID0/T-OS.../Scan010004.jpg "+ анализ написанного:"
The bits from the (English) WD explaining how all the Psychic Powers work has been posted
Contrary to what's been accepted thusfar, presumably due to the vague nature of the word "generate" or possibly translation issues, powers from the new disciplines appear to be random, not chosen.
The Grey Knight (bottom right of the third image) example includes the following wording:
There also seems to be a "generic" power (which has been suggested before as why the deck has 35 cards rather than 30 cards) for each, which you can choose to use instead of what you rolled in the event of a bad roll. I believe this is how Fantasy works? Anyhow, the "generic" power is called the Primaris Power and is referenced in the Space Marine example rather clearly:
This pretty much crushes any speculation of being able to cherry-pick which powers you want, but given you can mix and match, it shouldn't be uncommon for Psykers to ditch relatively-unused powers from their Codex for a roll on the table.
Краткий пересказ - силы надо накидывать, есть primaris power (аналог сигнатуры из FB), на которую можно поменять ненужную силу.