You gain the following Martial Masteries
Katana Eviscerate(2 Action)
5 Point, Katana.
Dash 5ft and make an attack with -2 to hit against a target who is off-guard and you are making a sneak attack against, You leap onto the target and plunge your Katana into the foe.
Forgo your sneak attack damage, you instead make an attack that replaces your normal weapon attack damage with a attack that does 25% of the target current HP in piercing damage while applying any on-hit effects
Entangled Barrage(2 Action)
3 Point, Kusarigama only'
When you trip a creature using the Kusarigama. You can dash immediately 30ft to within melee range of the creature and make an attack against it with advantage, This attack gains +2 armor piercing and counts as a sneak attack. However you gain a -3 to defence until the start of your next turn,