I have a problem with the phrasing of Ghast.
Does that make that fighter a psycker or not at least for the game?
If so if he is carry a sword does this sword become a force weapon?
Ghast-induced psykers lack any real mental strength, though for a brief time they are able to exhibit a single ability, albeit without any great skill.
When a fighter uses Ghast, they roll a D6. On a 1, they become subject to the Insane condition. On a 2-5, they gain a random psychic power from the table on page 156. On a 6, they both gain a
random psychic power and become subject to the Insane condition.
Does that make that fighter a psycker or not at least for the game?
If so if he is carry a sword does this sword become a force weapon?
FORCE
In the hands of a non-psyker a Force Weapon has no additional effects. However, when wielded by a fighter with either the Sanctioned Psyker or Non-sanctioned Psyker special rule, the weapon gains both the Power and Sever traits.