Temperature Control
You can alter the ambient temperature. Heating or cooling is limited to 20° per level, and occurs at a rate of 2° per level per second of concentration. You can affect a two-yard radius at a distance of up to 10 yards. Use Increased Range or Reduced Range to modify range; add levels of Area Effect to increase radius.
This ability never does damage directly. For that, buy Innate Attack – usually either burning (for flame) or fatigue (for attacks that damage by altering body temperature).
Special Limitations
Cold: You can only decrease the temperature. -50%.
Heat: You can only increase the temperature. -50%.
Psychokinetic: Your ability is part of the Psychokinesis psi power, often called "cryokinesis" (for cold) or "pyrokinesis" (for heat). -10%.