Nagual

The guide in the lives of sorcerers is called "the nagual." The nagual is a man or a woman with extraordinary energy, a teacher who has sobriety, endurance, stability; someone seers see as a luminous sphere having four compartments, as if four luminous balls have been compressed together. Naguals are responsible for supplying what sorcerers call "the minimal chance": the awareness of one's connection with intent .

Carlos Castaneda, The Power of Silence, 1987

The spirit manifests itself to a sorcery, especially to a nagual, at every turn. However, this is not the entire truth. The entire truth is that the spirit reveals itself to everyone with the same intensity and consistency, but only sorcerers, and naguals in particular, are attuned to such revelations.

Naguals make decisions. With no regard for the consequences they take action or choose not to. Imposters ponder and become paralyzed.
Carlos Castaneda, The Power of Silence, 1987