Pyrokinesis through telekinesis - You could ligh up torch and use that fire. But you can not expand it or creat fire element from thin air. It would be same as you would throw that torch at enemy :D
So Cipher gathering his power from what ? From souls/lifeforce from broken enemies other ppl and friendly alies ?
Supporting skills should have opposite effect on alied target , when Cipher is disturbed and do not pass concentration check.