The fundamental source of all magic—invisible life energy flowing through all things.

Rukh are the invisible particles of life energy that flow through all living things in Shaeltharyn—the fundamental source of all magic.
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Rukh Density
Rukh density varies by location. Elven realms have far higher concentrations than the mortal world, creating a "pressure" on visitors with low magical capacity.
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| Location | Density | Notes |
|---|---|---|
| Elven Realms | Extremely High | Pocket dimensions via Death Trees. Overwhelming to Mundanes. |
| Astral Peak Academy | High | Built on a natural convergence point. Ideal for training. |
| Ancient Ruins | Varies | Often unstable. Wild, unpredictable flows. |
| Battlefields | Lingering | Death leaves traces. Rukh pools in places of mass dying. |
| Mortal World | Standard | Baseline density for most spellcasting. |
Training refines. It does not transcend. The blood decides.
Everyone is born with rukh; the amount they hold sets their genetic magical ceiling.
| Tier | Rarity | Description |
|---|---|---|
| Mundane | 85% | No magical capacity. Cannot learn. |
| Latent | 10% | Faint sensitivity. Basic spells only. |
| Gifted | 4% | Clear sight. Standard mage potential. |
| Exceptional | 0.9% | High capacity. High Mage tier. |
| Prodigious | 0.09% | Massive reserves. Archmage potential. |
| Monstrous | 0.01% | Beyond measurement. Reality bends. |
The higher someone's magical capacity, the more clearly they can see them.

Usually invisible to the average person. Those with magical aptitude may perceive rukh as butterfly-like particles of golden-white light.
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Casting Requirements