Quath |
Ninja is an Archetype of rogue. That means that when you take levels of ninja you may choose 1/6th of a rogue talent as your favored class bonus. And since the rogue talent Ninja Trick exists there is no reason to have a different option for ninjas in this situation. So after the sixth time taking this favored class option you are able to choose the rogue talent Ninja Trick or any other rogue talent.
Michael Sayre Design Manager |
It's not. JJ actually talked about how not creating an "Extra Ninja Trick" feat was an oversight because someone had just assumed that since it was a Rogue archetype the Extra Rogue Talent feat would cover that base. It was a little bit of an oversight on their part that they'd created two completely separate class features but only supported one.