Magic (Dominaria Supplement)
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 A Creator's note on Magic
Magic in Dominaria is an incredibly powerful but also rare and miraculous force. Many are those who can conjure basic Cantrips and a few spells here and there, but men who can truly bend the weaves to their will are few and far between. As stated in the Players section, even player parties can have only one in three (one in four or five preffered) dedicated arcane casters. Powerful wizards are forces of legend and powerful players in whatever environment they are in.
While my world has far more wizards of power than The Lord of the Rings series and the magic of D&D is far flashier, Lord of the Rings gives a solid insight into how magic should feel in Dominaria. It is something powerful and special, truly 'magical'.
 Arcane Magic
Arcane magic is the magic of the 'weave': the invisible strands of reality, fate, and the elements that run throughout the entire world and define reality. Arcane spellcasters bend and shape the weave to their will in order to do everything from conjure water out of thin air to hurling fire and lightning from their fingertips.
Spellcasters of different races often describe their access to the Arcane in different ways. Humans casters for example, speak of it as a 'door' to be opened, and not without difficulty at times. Elves seem to refer to it as a 'window' through which the Arcane shines and can be woven. To Dwarves, it tends to be a 'flame' that can be lit and then stoked into a raging inferno.
The Arcane energies can be accessed in two broadly defined ways: 'A Priori' and 'A Posteriori'. The 'A Priori' method of understanding the Arcane is a deductive form of reasoning, and casters such as Sorcerers use their own innate talents and understandings of the weave to bend the weave and open themselves to their power. In this case, the 'door' is open already. Practitioners of the 'A Priori' forms are often able to summon forth vast quantities of energy or spells, but with a more limited range of particular abilities.
The 'A Posteriori' method is more inductive, i.e. based in study and analysis. Wizards (in the proper sense) are at the forefront of the 'A Posteriori' and use in depth study of the Arcane to shape the weaves and channel incredibly powerful and precise spells. With 'A Posteriori' knowledge, the 'door' is opened with the proper rites. Practitioners of the 'A Posteriori' arts channel less spells in general but often are able to cast a wider variety of spells through study (especially higher power spells).
 Divine Magic
 Blood Magic
 Runic Magic
 Dragon Magic
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