Thermal Nimbus [one-action] Feat 4Fire Impulse Kineticist Primal Stance Source Rage of Elements pg. 28
You direct waves of warmth into or out of your kinetic gate to drastically shift the temperature around you. Choose cold or fire. You and allies in your kinetic aura gain resistance equal to your level to damage of that type. Any creature that starts its turn in your kinetic aura or moves into your aura during its turn takes damage equal to half your level of the chosen type. Elemental resistance from a gate junction is cumulative with resistance from Thermal Nimbus.
Traits
Fire: Effects with the fire trait deal fire damage or either conjure or manipulate fire. Those that manipulate fire have no effect in an area without fire. Creatures with this trait consist primarily of fire or have a magical connection to that element. Planes with this trait are composed of flames that continually burn with no fuel source. Fire planes are extremely hostile to non-fire creatures.
Impulse: The primary magical actions kineticists use are called impulses. You can use an impulse only if your kinetic aura is active and channeling that element, and only if you have a hand free to shape the elemental flow. The impulse trait means the action has the concentrate trait unless another ability changes this. If an impulse allows you to choose an element, you can choose any element you're channeling, and the impulse gains that element's trait.
Primal: This magic comes from the primal tradition, connecting to the natural world and instinct. Anything with this trait is magical.
Stance: A stance is a general combat strategy that you enter by using an action with the stance trait, and that you remain in for some time. A stance lasts until you get knocked out, until its requirements (if any) are violated, until the encounter ends, or until you enter a new stance, whichever comes first. After you use an action with the stance trait, you can’t use another one for 1 round. You can enter or be in a stance only in encounter mode.