Collect $1oa Vials of Felsoul Blood and $2oa Blood of Sargeras, then mix them into Felsoul Ink.
These sigils would make for a fantastic new tarot card. Quite powerful, in fact. We simply require an ink sturdy enough to inscribe them.
Fortunately, I have students like you that excel at fetching hard-to-get items.
For this project, I require ink mixed from demonic blood. The blood of the demons at Felsoul Hold will serve as a suitable base. You will also need Blood of Sargeras, of course.