
Spell
Thermostat
This potent spell grants the caster dominion over ambient temperature, allowing them to flood their surroundings with either blistering heat or frigid cold. The intensity, duration, and range of the temperature shift scale dramatically with the caster's magical prowess—a novice practitioner might only sustain the effect for half a minute within a single chamber, while a master of the arcane could alter conditions across entire regions for extended periods. History bears witness to the devastating potential of this spell, as legendary accounts describe ancient mages who warped entire landscapes into scorched wastelands that remain barren to this day. In practice, spellcasters have employed Thermostat to incapacitate foes through heat stroke or fatal hypothermia, making it a weapon of terrible efficiency on the battlefield. Nations have weaponized this spell throughout the ages, using it to decimate enemy agriculture, contaminate water supplies, and systematically extinguish populations through environmental catastrophe. The spell's capacity for mass destruction has made it both coveted and feared among those who seek to command the very forces of nature itself.
Open in Summon WorldsAt a glance
What this public profile contains
This view-only profile includes a creator-written description; 7 labeled detail fields; 2 structured sections; 1 artwork image supplied by the creator.
- Creation type
- Spell
- Shared by
- Mad Lad
- Connected worlds
- 0
- Detail fields
- 7
- Profile sections
- 2
- Artwork images
- 1
Details
- School
- Evocation
- Level
- 3
- Duration
- 30 seconds for novice, up to 1 hour for powerful casters
- Range
- 30 feet for novice, up to 1 mile for powerful casters
- Area of effect
- sphere(radius: 20 feet)
- Ritual
- No
- Concentration
- Yes
Components
Verbal
A series of incantations to invoke temperature control
Somatic
Gestures to manipulate the air around the caster
Material
A small piece of ice or a burning ember
Effects
Effects
The caster can choose to create an area of extreme heat or cold. A novice caster can fill a room with temperatures causing heat stroke or hypothermia for 30 seconds. A master caster can alter the climate over a 1-mile radius for up to 1 hour, causing severe environmental effects that can ruin crops and affect entire populations.
Public creation
Worldbuilding Context
Thermostat is a public spell profile shared by Mad Ladthrough Summon Worlds. This view keeps the creator's public information together with clear attribution and links to any connected public Worlds; it does not add story details beyond the fields shown on the profile.
Explore the profile as a standalone creative reference, then open Summon Worlds when you want to connect your own characters, locations, art, and lore inside a living World.
Continue building
Develop the ideas around Thermostat
Use Thermostat as a magic reference when defining effects, limits, costs, visual language, history, and consequences within a consistent setting. Return to the public fields above as a stable reference, then connect new ideas through a World so collaborators can explore how each creation fits the same shared canon.