Elsewhere as a setting is a cluster of universes connected by a single pocket universe called "Elsewhere"
Elsewhere is an demi-plane with unusual properties. At its center it's stable and safe; there is a floating continent capable of sustaining life. But around that the place is a maelstrom of spatial distortion that can easily kill. This instability is related to its ability to "annex" itself to other universe. At any given moment, Elsewhere will "intersect" very briefly with a bit of another universe. This typically doesn't produce any visible effect in that universe
However, sometimes Elsewhere will intersect an area with a living being, which then causes Elsewhere to "hook" to that entity. While hooked, Elsewhere is more likely to intersect with that universe again. Which leads to potential new hooks. Eventually this will lead to the universe being perpetually stuck to Elsewhere and acquiring sorcerers and Sorcery.
Sorcery:
The magic native to Elsewhere, it involves using the aspects of “lifeforce” to fuel magical effects which are separated between sorcery gifts and ritual sorcery. The lifeforce components in humans are breath, stamina, wakefulness, health and youth. Sorcery gifts are each tied to a different lifeforce component and can be used by a simple act of will. Sorcery rituals are a series of actions that can be combined and changed to create a vast variety of effects, still using lifeforce components, but often more than one. Rituals are much more versatile than gifts, but require much more prep time and research.
Sorcerers: as part of Elsewhere's annexation process, some people will be born with extra lifeforce. The term is interchangeably used to mean "people that practice sorcery" too and sometimes "true" or "born" are added to the former and "practicing" is added to the later to distinguish the two. Having extra lifeforce makes sorcery easier, it allows the casting of small effects without causing side effects of lifeforce expenditure and bigger effects by fueling more lifeforce into the effects. When Elsewhere “hooks” to a person, that person will start having sorcerous children; the sorcerous status is thereafter hereditary, but might experience dilution as sorcerers have children with non-sorcerers. First generation sorcerers will start with an average of twice as much lifeforce as non-sorcerers. “Diluted” sorcerers might have anything between twice and one-and-a-half more lifeforce. Sorcery sometimes skips generations.
Lifeforce:
The energy that permeates all living things and empowers sorcery magic. Spending lifeforce aspects will have suitable effects on a person. Each aspect will be better suited for some things than others, which is reflected in rituals and gifts. It is separated in five different components:
Breath: spending it will cause the feeling and the effects of asphyxiation. Breath has an affinity for automated and reactive effects. Example: temperature regulation that does not require explicitly thinking about changing the temperature to the desired level.
Stamina: spending stamina causes physical tiredness and can lead to an inability to move. Stamina has an affinity for physical and energy effects. Example: telekinesis.
Wakefulness: spending this will lead to mental tiredness and the need to sleep. Its affinity is for mind-affecting and sensory effects. Example: mental communication.
Health: typically, spending health will lead to effects similar to starvation and general ill-being, but some side effects might be more painful or exotic. It’s fairly flexible, but has an affinity for the very physical nature of things. Example: change iron into gold.
Youth: Ironically, spending this will not outright cause people to age on the spot, but their aging will accelerate until it matches their current youth level; another possible side effect is cancer. It naturally degrades over time. Youth is the most powerful of all lifeforce aspects and it has affinity for permanent and strong effects. Example: the creation of permanent artifacts.
It’s also possible to manipulate one’s own lifeforce to improve healing, change one aspect into another and transfer lifeforce into other people. Sufficiently skilled practitioners can use their manipulation of lifeforce to control their bodies more directly, from relatively simple applications like not scarring to controlling their own
heartbeat. When someone is “full” they don’t produce more lifeforce, but it’s possible to give someone more lifeforce than their “full” total and for them to hold to that extra for a time. How easy it is to hold onto extra lifeforce is inversely proportional to its recovery speed, with Youth not requiring any effort at all.
Components sorted by size: Youth; Health; Wakefulness; Stamina; Breath.
Components sorted by recovery speed: Breath; Stamina; Wakefulness; Health. Youth doesn’t recover naturally.