The Vumach sign is said to have been taught to Heteri shamans by the
four-armed frog people that lived in the mountain passes southeast of
Sofegai. The arrangement of one's fingers on a human hand requires
much more practice and flexibility. The proper display of the Vumach
Sign will make spirits and creatures of other spheres pause, allowing
time to prepare an incantation of defense (or allow those of wisdom to
flee the scene).