A partir de Pathfinder SRD
Primal Cunning (Ex) While a wolf head lacks the focus and training to access a ki pool, he does have an honed sense of primal, animalistic cunning that allows him to draw on reserves of puissance and tenacity that border on the supernatural. This acts as a ki pool (and qualifies as a ki pool for prerequisites), but it contains only a single ki point. However, even if the wolf head expends this ki point, he is able to use tricks that require him to have at least one ki point. Along with ruffian, this ability replaces the ki pool ability.
Minha interpretação dessa habilidade é que um ninja com cabeça de lobo não usa ki em seus truques ninja, mas também há a pedra angular para ninja e várias outras habilidades que exigem ki
A partir de Pathfinder SRD
Hidden Master (Su) At 20th level, a ninja becomes a true master of her art. She can, as a standard action, cast greater invisibility on herself. While invisible in this way, she cannot be detected by any means, and not even invisibility purge, see invisibility, and true seeing can reveal her. She uses her ninja level as her caster level for this ability. Using this ability consumes 3 ki points from her ki pool. In addition, whenever the ninja deals sneak attack damage, she can sacrifice additional damage dice to apply a penalty to one ability score of the target equal to the number of dice sacrificed for 1 minute. This penalty does not stack with itself and cannot reduce an ability score below 1.
A partir de pathfinder SRD
By spending 1 point from her ki pool, a ninja can make one additional attack at her highest attack bonus, but she can do so only when making a full attack. In addition, she can spend 1 point to increase her speed by 20 feet for 1 round. Finally, a ninja can spend 1 point from her ki pool to give herself a +4 insight bonus on Stealth checks for 1 round. Each of these powers is activated as a swift action. A ninja can gain additional powers that consume points from her ki pool by selecting certain ninja tricks
o que obtive de tudo isso é que o sistema ki é praticamente inútil para um ninja com cabeça de lobo, porque a maioria dos recursos ninja exige que você tenha pelo menos um ponto 1 restante ou use o ponto 1 para ativação. Além disso, a classe ninja parece fortemente focada no uso do ki, mesmo fora dos truques. Então isso levanta a questão: como você interpreta um ninja com cabeça de lobo, dado que as diretrizes ninjas regulares não se aplicam.