Psi-epsilon is available to exsurgents with the Psi trait at Level 3. This subset of psi involves abilities that can affect the underlying physical nature of the universe, creating localized reality-altering effects. Psi manipulation on this level is extremely dangerous and should have the potential of disastrous consequences, given that these manipulations violate fundamental laws of nature and sometimes create paradoxes between the forces that glue the universe together. Gamemasters are also encouraged to treat critical failures as appropriately critical.
Given these factors, psi-epsilon should only be accessible to powerful adversaries and used as a gamemaster tool with extreme precaution. The exact mechanics of psi-epsilon sleights are left wide open, for whatever use the gamemaster can dream of. Their intent is to be more cinematic than mechanical, so Given these factors, psi-epsilon should only be accessible to powerful adversaries and used as a gamemaster tool with extreme precaution. The exact mechanics of psi-epsilon sleights are left wide open, for whatever use the gamemaster can dream of. Their intent is to be more cinematic than mechanical.
At the gamemaster’s discretion, simply observing psi-epsilon sleights in action may inflict 1d10 + 2 mental stress on a character (EP p. 214).