The Nightgale is my personal build, is basically a mage and thief character, but diferent from nightblade.

This build focus one the use of magic, archery and light armor up to level 10 and getting into lockping and other stealth skills between levels 10-15. From there focus on Illusion, Speech and Alchemy to finish the build polish it the way you want and there you have it the Nightgale.

Perks:

• 01-10: http://skyrimcalculator.com/342910
• 10-15: http://skyrimcalculator.com/342912
• 15-20: http://skyrimcalculator.com/342913
• Level 35: http://skyrimcalculator.com/342915
• Level 50: http://skyrimcalculator.com/342917