Here's a Build I've been working on

luumina

Any / Multiple
v3.32:32

Super Stats
Level 6:
Level 10:
Level 15:

Talents
Level 1:
Level 6:
Level 9:
Level 12:
Level 15:
Level 18:
Level 21:

Powers
Level 1: Hawk's Talons
Level 1: Viper's Fangs
Level 6: Steadfast
Level 8: Night Warrior
Level 11: Form of the Tiger
Level 14: Conviction
Level 17: Bladed Cyclone
Level 20: Dragon's Claws
Level 23: Smoke Bomb Lunge
Level 26: Resurgence
Level 29: Parry
Level 32:
Level 35:
Level 38:
Adv. Points: 0/36

Travel Powers
Level 6:
Level 35:

Specializations

Devices

this is a ninja themed build, and i'm not sure what to add for the final 3 powers.

flowcyto

Well, Ricochet Throw or Throwing Blades are nice additions, due to NW's Sneak and having a ranged opener. Bladed Cyclone is fine as an up-close AoE, provided you take the Vortex adv so it can gather up mobs. Other AoE options to consider are Shuriken Storm, Inex Tides, and/or Dragon Kick. Kinda up to you what attacks you'd like to settle on, as there's some overlap there. Could also consider Chained Kunai for a CC and extra self-heal w/ the HoT adv, if you have room. Other general options are a threat wipe that can also put you in stealth (like Smoke Bomb itself), an AO, a 2nd AD, or a self-res. One example (of many good possibilities):

https://aesica.net/co/herocreator.htm?v=32&n=&d=12730iKPGLaQ0000007200C103BC07B8007505BI00BN0CEV05CJ09CG08ER00EG03EA00K6000mUB2MGB42kg40000000000&e=

Super Stats
Level 6: Dexterity (Primary)
Level 10: Recovery (Secondary)
Level 15: Constitution (Secondary)

Talents
Level 1: The Chiller (Dex: 10, Con: 10, Rec: 8, End: 10)
Level 6: Impresario (Dex: 5, Rec: 5)
Level 9: Quick Recovery (Con: 5, Rec: 5)
Level 12: Acrobat (Dex: 5, Con: 5)
Level 15: Accurate (Dex: 5, End: 5)
Level 18: Amazing Stamina (Rec: 5, End: 5)
Level 21: Boundless Reserves (Con: 5, End: 5)

Powers
Level 1: Boomerang Toss
Level 1: Viper's Fangs (Rank 2, Rank 3)
Level 6: Night Warrior (Rank 2, Rank 3, Silent Running)
Level 8: Form of the Tempest
Level 11: Ricochet Throw (Rank 2, Microelectronic Controllers)
Level 14: Steadfast
Level 17: Bountiful Chi Resurgence (Resurgent Reiki, Gifts of the Storm)
Level 20: Shuriken Storm (Rank 2, Floating Butterfly)
Level 23: Dragon's Claws (Rank 2, Dragon Rush)
Level 26: Smoke Bomb Lunge (Nailed to the Ground)
Level 29: Masterful Dodge
Level 32: Parry (Rank 2, Rank 3)
Level 35: Smoke Bomb
Level 38: Imbue
Adv. Points: 33/36

Travel Powers
Level 6:
Level 35:

Specializations
Dexterity: Combat Training (2/3)
Dexterity: Gear Utilization (3/3)
Dexterity: Deadly Aim (3/3)
Dexterity: Expose Weakness (2/2)
Vindicator: Aggressive Stance (2/2)
Vindicator: Merciless (3/3)
Vindicator: Focused Strikes (3/3)
Vindicator: Mass Destruction (2/3)
Warden: Slaughter (3/3)
Warden: Ruthless (2/2)
Warden: Upper Hand (2/3)
Warden: The Best Defense (3/3)
Mastery: Dexterity Mastery (1/1)

BCR/RR is a good self-heal, esp when paired w/ MD, but if you don't want the 10% dmg penalty then you can go back to R3 Conviction (and maybe R2 Resurgence). VFangs can be a basic melee cleave and puts up Shredded, while charged DC is the main single-target attack. Gears mostly for Dex, w/ some Con and Rec (and some cost discount on gear, and skip gearing for severity rating when you pick up Dex Mastery).