The advanced part + Deeper analysis:
Advantages of Shuriken.
1, Shuriken has Highest burst dmg for 2 seconds, and also nice DPS.
2, Move spd.
3, Inflicting dmg frequently (making debuff on targets quicker)
Analysis of Main Skills/Masteries/ Weapon Mastery
basic dmg coefficient is 1.5, and it will keep hit this area 15 times in 5 seconds(3hits per sec). Per hit has 0.4 coefficient, so total is 1.5+0.4*15=7.5.
Envoy:16% skill dmg on Envoy's path( Idk why us serve translate it to crit dmg, but it actually is skill dmg),
Right Weapon Mastery: Umbral Ambush has a buff that Arcane skills(which cost chakara) make 20% more dmg for 3s. 14% skill dmg .
Left Weapon Mastery: More chakaras
1, More dmg.
2, More hits.
1, Cost more chakras.
2, Need 5 secs to do the whole dmg.
3, So, Ninjutsu: Destruction (Envoy) and Buff of Umbral Ambush only increase it a part.
4, You cannot use it after just use it, cuz you only have 5 chakra.
Blue chakras: 1.9
Red chakras: has 2 parts of dmg, 2.9+1.5=4.4.
Envoy: 10% skill dmg.
Right: Umbral Ambush's buff (Arcane skills +20% dmg)+ red chakaras.
Left: 20% skill dmg, more chakras.
1, Only need 1s to make dmg
2, Ninjutsu: Destruction (Envoy) and Buff of Umbral Ambush can buff all of it's dmg.
3, You can use it after razor wind.
1, Only has well dmg when red chakras
2, Gcd is longer
1,When you can break def, def-12% is always better than 18% dmg taken.
2,But there are some case: 1, break def is meaningless, eg, dungeon OW toa or sfl. 2, You can -def in another way. eg, teamate, or vicki accessories. In these case we don't need to use -def.
3, No matter 12% -def, or 18% dmg taken, they are both debuffs, which means:
a, Your teammates will enjoy it. If no Guardian, Malice always depends on who makes highest dps, debuffs make your teammates's dmg higher as well, but Ballad only buff your self.
b, Some targets does not receive debuffs, like box in the Sky Tower.
Conclusion: -12%def is for common case, +18%dmg taken is for you don't worry about -def, Balled is for
Print you name on every st bosses&boxes! Malice.
III: Analysis of Sub Weapon.
1, Holy Sword: Hs is a good sub for shuri. Dry bones for -def, combo skills, and you can also play hs sub shuri. But if I can kill target by storm+fire, why I use dry bones? And if you are geared, do you need combo for survive? So I use hs for sub before +30.
2, Bard(is what I suggest):
Print you name on every st bosses&boxes! Per red tune+4% dmg dealt, so at most 12% dmg dealt. You can use Bard's healing skills before fighting. Bard weapon has MOVE SPEED! So you can kill bosses before your teammate see them. Storm song can -14%def with mastery( but it decrease 1 red tune, if you use dmg skill). Strom song 14%+ Break Defense 25%+weapon core10%=49%, so you can use 18% dmg taken for Razor wind.
3, Bow: Similar idea with bard, but cd is longer, and no move spd:(