One crucial difference in Thaumaturgy between 2dn Edition and Version Three is it's dependence on external sources of power which is what allows it to be accessible to mortals. Exalted and other supernaturals cannot circumvent this restriction. Thaumaturgy depends on use of esoteric materials and objects. Powering magic through inner Essence is called sorcery. Unlike sorcery it's effectiveness is somewhat limited and cannot perform totally supernatural feats, although it is significantly realty bending, being able to restore the dead to life under carefully controlled circumstances.
On the material requirements for Thaumaturgy mere resources are not an accurate indication of the objects needed to perform a ritual. Objects for a ritual are often very specific and may even be unique requiring a small quest to acquire them (such as the Heart of Dambala in Bride of Chucky.)
