Where does the sin specialist come from?

[Void Dragon]

This is a simple and probably easy question to answer, but where did the sin specialist wizard archetype come from?

[ShadowcatX]

It is the old Thalissonian (spelling?) type of magic.

[Void Dragon]

okay, thanks.

[MrSin]

Asking what book its from? Inner sea magic/Rise of the runelords anniversary edition I think. Its called the Thassilonian specialist.