I want to take a Cat as Mentor Spirit, and the disadvantage is unclear for me:
Cat magicians toy with their prey. Unless you succeed in a Charisma + Willpower (3) Test at the start of combat, you cannot make an attack that incapacitates your target. If you take any Physical damage, all this playing around stops.
Does this limitation mean I can not use combat spells at all, or I can not use high Force?
How could I know what incapacitates a Troll?
Or does this mean leaving the target alive to be able to play with it later?