Help: rogue skill

[colestros]

Hi guys^^ Recently I've been seeing a lot of stuff about mages being uh,, "not so great". And I was thinking about restarting an old rogue character of mine that I haven't used for a long time. Annnnd,,, I need some help. It's a lvl16 rogue and I'm looking for some advice on what skills I should have.The ones I have right now are;

Shadow Piercer. 1-Charge triple piercing. 2- 75% chance to heal 10% hp. 3- low dmg hits after normal shadow piercer attack.

Noxious Bolt. 1-duration of poison dmg +3sec. 2-increase area to 6m

Razor blade. 1-stay active for +3sec

Shadow storm shot. Everything except increased dmg on critical by 25%

Passives:+5 Dex- 3 points

I picked those skills because they seemed the best at handling mobs. Aimed shot and shadow veil seems good too. Not sure about entangling trap though. And I'm pretty sure I'm going to need combat medic.. Argh,, so confusing.. help please!!
To anyone of u guys who'd share their thoughts, thanks in advance