Thought Form

"A thought form is a spirit created by a person or persons with psychic ability, either as a short-term agent or as an independent being."
One of the most extreme versions of a thought form in fiction is Oblivion who was accidentally formed by Green Lantern Kyle Rayner and had incredible power. 
Thought Forms are also a main component of the fan setting Five Earths, All in a Row. As such Thought Form has gone far beyond what Classic: Spirits provided making the stat block originally provided effectively useless. 
For a Thought Form use Spirit (meta-trait) as the baseline modifying it to fit. 
This is effectively the Semiotic Ghost concept seen in The Gernsback Continuum taken to the next level.
==Reference==
*Classic: Spirits pg 62
*William Gibson: The Gernsback Continuum - Semiotic Ghosts Extra Sci
Category:Setting Concepts
Category:Spirits