I guess I can accept Abomination's affect. Saps Willpower just as Leifr's sword (which is nameless) saps endurance. Only it doesn't always affect its targets since they can resist it (DL 20 Concentration Roll). If they fail they lose 1 point of Willpower and the blade temporarily gets a +1 to Attack/Parry Rolls. If they succeed then your chara has to make the same Roll or lose a point of Willpower. It won't drain her Energy though every time (as Leifr's sword drains his vitality) since the enemy gets a chance to resist and if they succeed then you have to try and resist. It balances out.