Legend says the first shinobi learned their art from the Tengu. Some Tengu, capable of assuming human form, interbred with humans. Some members of the ninja clans are descended from these bloodlines, and manifest sorcerer powers.
Class skill: stealth
Bonus Spells: 3rd: Vanish; 5th: Invisibility; 7th: invisibility Sphere; 9th: Greater Invisibility; 11th: Seeming
At 1st level, you can use Feather Fall as a spell-like ability with a caster level equal to your sorcerer level. You can use this ability a number of times per day equal to 3 plus your charisma modifier.
At 3rd level, you gain darkvision 30 ft. At 9th level the range increases to 60 ft.
At 9th level, you can become invisible for a number of rounds equal to your sorcerer level; these rounds do not need to be consecutive. Activating this power is a swift action that does not provoke attacks of opportunity.
At 15th level you can transform into a raven at will, as though casting Beast Form II.
At 20th level, you can see in any normal or magical darkness. You gain DR 10/- in shadow or darkness.
Note: a Tengu sorcerer with this bloodline and the Ninja campaign trait treats their sorcerer level as 2 higher for purposes of their bloodline powers. This ability does give them earlier access to some abilities.