Honestly, I would go Dragonfire Adept. They have plenty of useful invocations, and breath weapons are quite useful in a variety of situations.

I would go something like this:
13, 12, 11, 10, 9, 8

STR 10
DEX 9
CON 15
INT 12
WIS 8
CHA 11

HP: 10
AC: 9
BaB 0

FORT 5
RFLX -1
WILL 1

Breath Weapon
2d6 Fire RFLX DC 13

Invocations:
Endure Elements (So as to not set things on fire unintentionally)

Feats:
Dragontouched (From Class)
Least True Dragonmark of Making (Ebberon Setting) (From Human)
-I can repair all kinds of stuff now! :D
Breath of Siberys (1st)
-makes BW more potent

Skills:
Appraise +5 = 4R+INT
Decipher Script +5 = 4R+INT
Diplomacy +4 = 4R+CHA
Know (Local) +5 = 4R+INT
Know (Engineering) +5 = 4R+INT
Speak Language +4 = 4R


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