I tried lots of builds and actually i love this. 155% move speed, and all-time invisibility at lvl 20 is great. Lvl 16 talent makes your target squishy - +30% bonus damage. Of course u can take Illusion Master, but only if you're greeat at Lost Vikings. Ye-ye.

Lvl 1. - Your movement.
Lvl 4. - Your magic defence.
Lvl 7. - Cast illusions and slice ypur foes on pieces.
Lvl 10. - Your teamfight damage.
Lvl 13. - More mobility. Some of walls could be get through.
Lvl 16. - More solo-target damage.
Lvl 20. - In coop with previous talents, your Invisibility get -6 sec on CD, and you move like ninja all over the map. Nothing can stop you, because you - teleport, 2.5sec cant be revealed, make +30% dmg for 3 seconds. Hmm, actually good for killing backline.
The AA DPS build is good, but... I don't like it. Anyway, enjoy. :p Have fun!
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[Varian Patch]
HP - changed to 1650, regen 3.44.
[Q] - Mirror Imagee - CD now is 18sec. Lifetime of the illusions is increased too.
[E] - Wind Walk - additional movespeed is +25% now, not 30%. Actually this doesn't make any sence.
Lvl 1. - Way of the Wind is still actual. Now you'll have not 155% ms, but 150%. Still feel him like Flash.
[R2] - Illusion Master - Additional illusion damage reduced to 15%
Conclusion: Nothing actually has changed. Nobody still can catch this Flashy Samuro, the Run-Away Master.
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[6 December]
[E] - Wind Walk - This time they added 1 sec on CD of this skill. Now it's 13 second, not 12 anymore
[R1] - Bladestorm - DPS has changed from 250 to 235. That's not huge, but you need to be sure that you will kill targets, so always check enemy's HP before you use Bladestorm.
Talents: (most dissapointing for AA build)
Lvl. 1 - Way Of The Blade - Addtitional DMG has changed from 25% to 20%.
Lvl. 4 - Mirage - Spell block is now 40% per charge. Not 50%. Watch out for magic, honored Orc.
So, what we'll have on next Patch: There would be no "OMG NO DPS AAAAAAAAA". No. You need To play more careful. Cutted magic resistance makes some sence. Worst thing that happened is cutted DMG for AA build. It's still makes DMG, but a little bit less.
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[31 May]
[E] - Wind Walk - Cooldown time was increased from 13 to 15 seconds. Duration was increased as well - from 8 sec to 10.
Not a significant change.