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Message: <blockquote data-quote="gpetruc" data-source="post: 808862" data-attributes="member: 2255">I've managed to have a look at the magic rules in Ars Magica. Very nice Anyway I won't try a straight conversion mostly because that magic does not fit the standard D&D world.After some tries I thought about this for the spellcasting system:To cast a spell you pay an amount of colored mana and colorless one (that usually is simply mana of the wrong color). The total mana is the spell power and is used instead of the caster level to determine variable effects such as damage, range, base duration of the spells. It also determines the save DC (that is 10 + half spell power + casting ability modif. such as int or cha)1) I will than make a list of "spell schemes" (such as something like a generic fireball, bull's strenght, fly, cure wounds, ...) Each one has a base casting DC, colored mana cost, duration & so on.2) The caster, after having chosen the scheme, and fixed the spell power by paying additional colorless mana, can then makes some changes  to the spells.Nearly all of the changes are not spell-specific, and so it won't be many rules to know.Examples include changing the duration scale (from minutes to round or hours, for example), the number of targets, the type of energy, and so on. Each change adds a cost (or reduces the cost) of the spell, and alters the DC, but does not change the spell power (If you pay more mana to enlarge a 10d6 fireball, you don't also raise the damage with those mana)At the end you have the final (total) cost and the DC to cast itThe spell schemes will be designed with the idea that a spell of level L should cost about L colored mana and have a DC of 12 + 2*L(Note that casting skills depend only on ranks, the base ability modifier (no enhancement bonuses) and eventually the specialization; nothing else interferes) Any caster can also make spells outside the schemes, if they are balanced with them.</blockquote>

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