What is it?
Just a bat file to give your character most of those little racial perks (Night Eye, Highborn, Imperial Luck, etc.). See the bottom of the page for a complete list. (This is the exact same file as the one for Skyrim SE, so if you have that one, you don't need this one. Still, the link to the other one is right here.)

TO INSTALL:
 
 In case this is your first time using a .bat file, here's how to do it:
 
 1. Download and extract into your Skyrim folder (NOT data, but the directory that contains Skyrim.exe.)
 
 2. Launch Skyrim and load up your saved game (or start a new one).
 
 3. Type "~" (without the quotation marks) to open the console, then type
 "bat MIXRACE" (without the quotation marks) Then type "~" again to close
  the console
 
 4. Your character now has all of the abilities on the list, permanently! Use and enjoy!
 
 Here's the entire contents of the bat file.
 You can also edit it to exclude abilities you don't want, add those you do, or simply type in the commands by hand:
 
; scholar's insight perk
player.addspell 0401e7ef
; Companion's Insight
player.addspell 0401e7f5
;Magic Resistance
player.addspell 000aa01f
;Highborn
player.addspell 00105f16
;Resist Disease and Poison
player.addspell 000aa025
;Resist Fire
player.addspell 000aa021
;Resist Frost
player.addspell 000aa020
;Waterbreathing
player.addspell 000aa01b
;Night Eye
player.addspell 000aa01d
;Imperial Luck
player.addspell 000eb7eb
;Claws
player.addspell 000aa01e
; Voice of the Emperor
player.addspell 000e40ca
;Command Animal
player.addspell 000e40cf
;Dragonskin
player.addspell 000aa022
;Highborn
player.addspell 000e40c8
; Adrenaline Rush
player.addspell 000e40ce
; Ancestor's Wrath
player.addspell 000e40d4
;Battle Cry
player.addspell 000e40c3
; Berserker Rage
player.addspell 000aa026
;Dragonskin
player.addspell 000aa022
;Highborn
player.addspell 000e40c8
;Histskin
player.addspell 000e40d5

player.modav carryweight 300000