Making my assassin perfect

[Fridayknight]

I am making a changeling assassin and with 14 in bluff at level 5 i want to improve this at future levels so that i can perfectly impersonate people. Are there any feats that will improve my bluff or shapechanging skills? My dex and cha are through the roof do im having fun imagining his power (he has also hidden insight and 13 in stealth with sneak attack multiclass). Any suggestions.

 

[LightPhoenix]

The obvious one is Skill Focus (Bluff), which will give you another +3 feat bonus. Insidious Shroud is the a you'd want to pick up (use Shroud on creature Tricked). Becomer (Dragon 386) gives you a +2 racial bonus when you're shifted into a specific race; no good for Bluff, but you could use it to gain a bonus to Stealth.

 

[Droogie128]

Linguist. I played a changeling assassin, and the shape change was useless 95% of the campaign due to language barriers. Unfortunately, 13int is expensive for an assassin.