How magic pervades Kuithne
From Kuithne
Essence is a highly responsive and visible force of nature on Kuithne. Almost all beings have a connection to it and manipulate it to varying degrees. The key here is that it is suspectible only to the influence of living beings. This manifests in a number of ways:
The land
The land takes on characteristics according to its past and present inhabitants. This shapes geography, how magic works, and subtly how things work in general. Essence respond to the collective force of beings.
The people
Although wizards who devote themselves purely to the mastery of essence do exist, everybody can to some degree manipulate it. In fact, pretty much everything is a potential channel to manipulate essence provided it is refined enough. Hence master warriors learn how intuitively accomplish magical feats to amplify their skills the more refined their mastery gets, master smiths learn how to imbue their items with magical properties by masterful craftmanship and so forth. There are schools of training in how to harness the latent magical potential of virtually any discipline. The key here is refinement and mastery - completely ordinary people generally do not manifest much aptitude except to perform minor shticks.
Animals
Animals, unlike most intelligent beings, tend to manifest their magical potential genetically, hence their magical traits are more uniform to race. It seems intelligence naturally diversies the mind in ways for greater diversities of magical manifestation but also potentially more shallow manifestation.
How to channel essence:
There are many ways to access and harness essence, but here is a layout of the primary ones:
Words
The secret behind the mastery of wizards was the ancient discovery that words seem to have a particular mystic resonance to essence. It is as if there exist some realm of true words (the same way it is posited by some today that numbers truly exist and are not just mental constructs) in which everything is somehow represented by wordings. People can find out their own true names to attain mystic atunement to the essence (so can others to control them), people with great power and influence on the world can find their names taking on power of their simply by being invoked and so forth. And of course, wizards cast spells by mastering arcane formulas. Other variations on this theme include symbols like runes, gestures and rituals. These are more considered different languages of magic talking about the same thing, with their own benefits and drawbacks in terms of interpreting and harnessing essence. Some even combine them.
Item foci
The same way the land can take on attributes of its past and present inhabitants, items can take on attributes from their past and present owners, usually relative to their power. This is a very common practise as harnessing essence by items as a focus seems to make it easier. The power of the item is relative to how much power is invested into it, but likewise the ease attained is relative to how much power is invested into an item. In a way, items function as a kind of memorized pattern of harnessing essence. For example, a ritual warrior who can make his blade flaming might normally require focus, energy and time to harness this ability but by investing his power into his chosen weapon, this happens more automatically and easier.
Likewise many wizards will have some kind of item to harness and focus their spellcasting through, like a staff, gem, ring or whatever. Those without one will find their spellcasting made less efficient.
There are many degrees of focus and empowerment. Some will pour virtually all the potential into one item to harness their power most efficiently whilst running the risk of losing all of it if they lose the item. Others will pour focus into an item to a degree that they can recover their power if they should lose the item.
Some materials and items seem to have special affinity and focus with particular essence manifestations. This is the cause for spell components for certain spells acting as a focus or for certain weapons having certain qualities.
The gods
Another way to harness the essense is by divine empowerment. Although it is the same basic force used, divine empowerment is a way for the gods to attune their followers to the essence in particular ways to serve their purpose. Others receive empowerment from other forces like native spirits and extra-planar beings. Sometimes, extremely powerful wizards can accomplish this as well. It is by some considered a shortcut to power, but also a restrictive due to its submissive nature to the gods. By others, it is considered merely another discipline for harnessing magical potential among many others.