Mana
Mana allows a sufficiently stable pattern to produce a physical effect. That pattern might be a spell’s symbols, the organization of a living thing, the arrangement of a building, or a social pattern.
Matter tends to persist; mana tends to organize. Where mana is sparse, ordinary physical behavior dominates. Where it accumulates, these patterns can begin to shape reality. Mana therefore does more than supply the energy for magic: it is the medium through which a pattern becomes physical.
A traditional spellcaster consciously carries out four steps:
- Gathers mana.
- Establishes a symbolic structure.
- Stabilizes the transformation they intend to produce.
- Releases the effect.
A rune holds that structure without needing a conscious mind to maintain it. Connected runes can test conditions, trigger other runes, redirect mana, and repeat operations. Those capabilities make machinery possible.
How mana carries a spell
Mana changes as it passes through a rune. It carries the resulting pattern onward, so each later rune receives mana shaped by what has already happened to it.
When the flow branches, both branches inherit the history before the split. Each then carries its own further changes toward the next junction or terminator.
A terminator is the part of the working that reads the accumulated pattern and draws enough mana to make the specified effect physical. A correctly constructed sequence can still produce something useless and consume mana doing it. A corrupted sequence poses a greater danger: its terminator may draw enough mana to carry out an effect the caster never intended.
The conduits carrying mana also affect its pattern. Gold carries many patterns with little interference. More selective materials may preserve, alter, contain, or waste a particular flow. Material choice therefore depends on what has already happened to the mana. The same metal at two points in one working can encounter mana with different histories.
Mana crystals
Sustained magical pressure causes mana to precipitate into stable crystals. Those crystals have several uses:
- They supply magical fuel and act as batteries.
- They serve as magical reagents.
- Industry trades them as commodities.
- They can be stockpiled as strategic reserves.
- They provide nutrients within magical ecologies.
Industrial ledgers account for the first four roles. Inside a dungeon, a crystal may also feed dormant organisms, store mana through a lean cycle, or seed new growth after damage.
Traditional delving removes some of this stored mana. Deep machinery can empty the store in weeks, taking what the surrounding ecology accumulated over centuries.
The threshold of life
A lasting magical pattern is not necessarily alive. No measured quantity of mana guarantees awakening. Known cases combine durable organization, memory, feedback from the surroundings, and enough complexity to distinguish self from other. These features describe the known cases; they do not provide a guaranteed recipe.
The distinction becomes clearer when comparing what different patterns can sustain. A spell usually expires when its caster stops maintaining the completed pattern. A rune can keep the pattern going without that attention. A spell engine that receives feedback can change its response to its surroundings. A mature core that retains past encounters may eventually distinguish itself from an intruder.