Some tonkins focus upon their tonberry aspects to wield a knife with mastery. The knife master is a trained killer who specializes in close-up combat and the wave and weave of knife fighting. In its hands, daggers and other similar light blades become truly deadly instruments.
The knife master is an archetype of the thief class, available only to tonkin thieves.
At 1st level, a knife master adds half of its level on Sleight of Hand checks made to conceal a light blade.
This ability replaces mark.
Sneak Stab (Ex)
A knife master focuses its ability to deal sneak attack damage with daggers and similar weapons to such a degree that it can deal more sneak attack damage with those weapons at the expense of sneak attacks with other weapons. When it makes a sneak attack with a dagger, kerambit, kukri, punching daggers, starknife, or swordbreaker dagger, it uses d8s to roll sneak attack damage instead of d6s. For sneak attacks with all other weapons, it uses d4s instead of d6s.
This ability is identical in all other ways to sneak attack, and supplements that ability.
Blade Sense (Ex)
At 3rd level, a knife master is so skilled in combat involving light blades that it gains a +1 dodge bonus to AC against attacks made against its with light blades. This bonus increases by +1 for every three levels, to a maximum of +6 at 18th level.
This ability replaces danger sense.
The following thief talents complement the knife master archetype: befuddling strike, combat trick, offensive defense, surprise attack, underhanded, and weapon training.
Advanced Thief Talents
The following advanced thief talents complement the knife master archetype: another day, confounding blades, deadly sneak, entanglement of blades, and unwitting ally.