[quote=@Letter Bee]
[@Golden Spiral], Then I ask for my last reroll for my Mystic Code.

Also, just to make sure, the roll is for additional Mystic Codes and one still gets three Average ones?
[/quote]

Yep, you get three average mystic codes. The rolls are just a bonus, essentially.

And what will you reroll? The quantity of mystic codes, or the quality of the mystic code you got?