how does the space marines librarians physchic hood effect Farseers. does runes of warding have any effect on phschic hood and can the librarian use it on all physchic attacks that turn or can he only nullify one attack per turn and when the librarian uses spells like fury of the ancients, if the line passes 6" near the farseer or through it's squad does the space marine player need to roll 3D6 and discard lowest for passing physchic test.