I shall call it, a samurai! 
one thing i might add is that this should NOT cost adreniline. it costs energyAtributes:
Speed (primary): With each rank in this atribute, your attacks are 1% faster. If you give it 10 ranks then tuh-duh! you attack 10% faster. simple 1st grade math.
Katana master: So, you've seen sword mastery, hammer mastery, bow mastery, dagger master, axe mastery, and now, katana mastery! Just like all the others, this effects your skills with a katana (thats what they use). They names of some skills would be like, swift strike: an attack that strikes 33% as fast as normal. if swift strike hits, it deals ___ slashing damage, or....puncture: If this attack hits, target foe begins bleeding for ___ seconds and that pesrons action is interupted. Stuff like that
nature atutment: its like being one with nature, what i mean is that it helps skills that give you advantages during battle like being able to dodge an attack and other things like that. some more skills could be, meditation: stance: you have a ___chance to evade an attack. when you evade an attack this way you gain _____ energy.
still thinkin of more atributes
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