Also I was hellbent on teaching those fellow sins outside Senjis Corner (yes the vermins) a lession. Old grudges die hard especially if the opponent is the same profession

Anyway I came up with two builds in the end. One for the vermins and one that works well for farming graps and stuff in UW.
Both were matched in hardmode:
----Vermins HM-----------------------------------------------
Way of the Impaling lotus
(DP, GoS, SF) +Sharpen Daggers, Golden Lotus Strike, Fox Fang, Death Blossom, Impale
-Shadow Arts 16, Dagger Mastery 13, and Deadly Arts 11
Use enchantment prolonging dagger if you want some margin for renewing SF. I swapped to Shiros Blades as soon as the fight starts for the life-stealing and the cool looks.
This is very slow beating their heart of shadow and probably not going to be used to solo them for profit. If you go out in a pair they die like flyes though.
-------------------------------------------------------------
----UW Graspings&Nightmares n other HM--------------------------
Way of the Lotus
(DP, GoS, SF) +Golden Lotus, Fox Fangs, Death Blossom, Heart Of Shadow, Dark Escape
-Shadow Art 16, Dagger Mastery 15, the rest on deadly arts
Blossom and your continuing strikes (prevents regen) is what hurts them. Heart of Shadow and Dark escape is there to bale you out if you get boxed in between Aatxes, or accidentally hits one giving you a draining condition. Don't panic keep your guard up the drain will end in time after you healed with your shadow step.
I have found this to be slightly faster than the earth and fire options for graspings. I might be misstaken for subjective mind here.
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-The Golden Lotus is your energy. Before you get used to how your energy clocks start and END your attack sequence with it.
-(Since there is no attribute in Air Magic you only have 1 next skill that recharges faster. Glyph of Swiftness has to come after you press Paradox or you will burn its effect on that skill.) -This statement is incorrect as pointed out by replies below!-/edit
-In the later build you only have 7 seconds of Paradox. Do not press it to early!
Code for the lazy:
Way Of The Lotus: OwZT0Z/85RnJ95RIwGoAkhdwAA
Way Of The Impaling Lotus: OwZT0VP+5RnJ95ReOBID7glABA
Signed.
/Dagger V (my assasin)