Meanings of shamanistic magic in English

Raven's-foot howled and cast his shamanistic magic, freezing soldiers dead in their tracks with a rattle of the gourd.

Alas, though it seemed the Torgun won, in truth they lost, for the treacherous ogres used foul shamanistic magic to steal the sacred Vektan Torque.

In the same way, the "good" alliance characters tended to employ Western, Christian-like symbols, while the evil horde had totems and shamanistic magic.