This baby here is a pretty intresting sin, believe it or not, it has 0 daggar mastery and uses daggars!!
You may wondering, WTH?! Well lol this beuty here is great for all those fun times where you getting killed by clumps of mobs

12 in curses
12+1+3 in critical strikes
the rest +1 in shadow arts
This is laid out, skill and describtion and then the reason why its used.
1 Mark Of Pain
Description: For 30 seconds, whenever target foe takes physical damage, Mark of Pain deals 10...40 shadow damage to adjacent foes.
Energy Usage 10
Skill Type: Hex .
Cooldown Time: 30 second(s)
Casting Time: 2 second(s)
This is your damage dealer, it will hit great with all your extra double strikes
2 Parasitic Bond
Description: For 20 seconds, target foe suffers Health degeneration of 1. The caster is healed for 30...120 when Parasitic Bond ends.
Energy Usage 5
Skill Type: Hex .
Cooldown Time: 2 second(s)
Casting Time: 1 second(s)
Just basically a heal i guess, spam it around in the beginning of the battle so you don't die later on
3 Locust's Fury (e)
Description: For 10-30 seconds, you have an additional 20% chance to double strike.
Energy Cost: 10
Activation Time: 2 Seconds.
Recharge Time: 30 Seconds.
Linked Attribute: Critical Strikes. Increases duration.
Skill Type: Enchantment Spell.
The reason is, the whole point to the build is to hurt the people around the main dude, the main dude may not die until the end, which would be preferred since you have to wait like 30 seconds for mark of pain to recharge, when you use mark of pain you should switch to a recharge reduces wand or something.
4 jagged strike
Description: If Jagged Strike hits, your target suffers from Bleeding for 3-8 seconds.
Energy Cost: 5
Activation Time: None.
Recharge Time: 4 Seconds.
Linked Attribute: Dagger Mastery. Increases Bleeding duration.
Skill Type: Lead Attack.
This skill along with wild strike are both cheap and fast recharge so you can use critical strike a lot, since that is a dual attack it will hit 2x for mark of pain
5 wild strike
Description: Must follow a lead attack. If it hits, this attack strikes for +8-18 damage and target foe loses 1 stance.
Energy Cost: 5
Activation Time: None.
Recharge Time: 4 Seconds.
Linked Attribute: Dagger Mastery. Increases damage dealt.
Skill Type: Off-Hand Attack.
Read the reson for jagged strike
6 critical strike
Description: Must follow an off-hand attack. If it hits, this attack strikes for +10-26 damage and resuslts in a critical hit.
Energy Cost: 10
Activation Time: None.
Recharge Time: 6 Seconds.
Linked Attribute: Critical Strikes. Increases damage dealt.
Skill Type: Dual Attack.
It's a fast recharging skill, plus it activates mark of pain 2x times, which is good
7 recall
Description: All adjacent foes are Crippled for 3-7 seconds. Teleport to target ally's location.
Energy Cost: 5
Activation Time: 1/4th of a Second.
Recharge Time: 20 Seconds.
Linked Attribute: Shadow Arts. Increases Crippled duration.
Skill Type: Spell.
Because dieing makes you useless...
8 rez - cause you need it duh
This build i really like, i have been working on it for awhile now, i wanted to make it some some sins feel like they have a purpose again. The high critical strikes makes your energy stay stable, i managed to even have a teleport skill which is good, since sometimes those blastes explosions can own us lol, which is one reason you want 15 al while attacking, because the main dude you attack won't die, so when those explosions go off you maintain the extra armor.
Notes on this
1 dont tank, this is baaad tanking idea.
2 don't forget to keep using parasitic bond, espcially on the ajacent people so when they die you will get around 100 some health
3 dont be araid to teleport, you can come back into the fray, but if you die you hurt your team more than anything.. well usually
4 dont switch targets.. i mean serously attack the dude with mark of pain on him, don't be stupid
5 try to get zealous daggars, they would help, and pretty much any daggar set would work, since you won't hit more than 6 with them most likely anyway.
6 this is not a typical sin build, this isn't for 1v1 assassination, it is for mob wipe out.
Ok well comments accepted, but the people who hates sins, be nice please, i mean you can hate us but we are still usefull...