Thaumcraft assets are not free and are solely property of Azanor. According to clause 4 of the Thaumcraft license:
Public distribution of modified versions of this MOD require advance written permission of the OWNER and may be subject to certain terms.
Without proof of permission, you do not hold rights to use Thuamcraft assets. And you likely won't be getting permission any time soon since Azanor hasn't been around for 3 years.
Thaumcraft assets are not free and are solely property of Azanor. According to clause 4 of the Thaumcraft license:
Without proof of permission, you do not hold rights to use Thuamcraft assets. And you likely won't be getting permission any time soon since Azanor hasn't been around for 3 years.
Which means, either make your own assets, or obtain or prove pemission