Thaumaturgy comes from within.
Quote:Class Description:you are litteraly using your own aether to power your spells, focused through the scepter. Nowhere in any quests does it mention THM's drawing from anywhere apart from oneself.
In the hands of a skilled practitioner, thaumaturgy can be a force of terrifying destruction. At the heart of this school of magic lies the ability to call forth and command the latent aether within oneself through deep introspection. To then mold that aether into sorcery, the thaumaturge makes use of a scepter or staff, within which is housed a medium—a natural stone imbued with magical properties. Thus armed, the thaumaturge is capable of wreaking considerable havoc via ruinous spells and curses.
Aduu Avagnar, The Wanderer: Wiki
