12 dagger mastery
rest to deadly + 1
Black Lotus Strike
Horns of the Ox
Moebius Strike {E}
Falling Spider
Iron Palm
Critical Eye
Siphon Speed
[heal skill, support skill, teleport skill, res sig, etc.]
Whoo boy, where to start. Some may use Siphon Speed on multiple foes if their energy reserves aren't being emptied out. Why? Team support? Just a suggestion, bah*
As you can see, if done properly, you can knock your foe down a whopping 3 times and what's worse, they're under constant degen the whole way through.
BLS is a reactionary skill, you need to be FAST with it so that you can land your opening strike to get a chunk of energy back. [under 13 crit, it should give ya a full bar to start the knock locking]
After Moebius strike, you can land another Horns of the Ox into Falling spider for 2 ugly helpings of knockdown and poison. When they get up for the 3rd time, use Iron Palm to plant their asses back on the floor. Oh wait......

wtf?
chain: Siphon Speed, BLS, Horns of the Ox, Moebius Strike {E}, BLS, Horns of the Ox, Falling Spider, Iron Palm.
chain modified, more time, more dmg: Siphon Speed, Iron Palm, Falling Spider, BLS, Horns of the Ox, Moebius Strike {E}, BLS, Horns of the Ox, Falling Spider.
modified again: Siphon Speed, Iron Palm, Falling Spider, Horns of the Ox, Moebius Strike {E}, BLS, Horns of the Ox, Falling Spider
if Iron Palm counts as an attackskill [not sure if it'd be regenned by Moebius, Good heavens what combos you can do!]

There's more modifications to this loop but it's quite versatile so long as you can get either your hex or your condition to stay. [not hard with knockdown loopy]
With a good dose of luck on your side, your Critical Strikes should have kept your energy high enough to either continue slashing or just get outta there with chosen teleport skill.
Quite a loop, any ideas for an 8th skill?