Psionics

Channeling the power of the Sidereal.

PSI, PK, Psychic Abilities, Evocation.

Vary to source of power and personality of wielder.
Someone channeling pure Sidereal energy would appear to project geometric shapes of various colors. Someone channeling energy through a deity would appear to project things related to said deity. Sometimes can take a constant shape related to personality.

Most often effects the mind, but sufficiently powerful PSI users can do almost anything.

Much easier to affect minds than physical matter.

Access to the Sidereal, the realm of Gods and the dead.

Mental fortitude, memorization of sorcerous formulas.

Is extremely easy to limit by another user. Some materials and people cannot be affected.