the main types of spellcasting are used by wizards and by the geothermal priests of the dark elves.
wizards roll on the following 1d30 table at least twice (possibly more if they know more spells) to determine "magic words" with which the wizard can construct their spells. if the wizard rolls the same word twice, reroll.
to cast a spell, the wizard combines as many magic words as they wish (it can also be a single word!), and they (along with the gm) interpret the spell's effect. if they wish to improve the power of the spell, they must spend points of their MAGIC score. to cast the spell, roll 1d20 + magic points allocated +/- any situational modifiers. if it is 10 or above, the spell goes off without a hitch. if it is 20 or above, it goes off REALLY WELL. if its below 10, the spell fails and something bad happens.
GEOTHERMAL PRIEST MIRACLE USE
the geothermal priests of the dark elves know how to cast spells from a set list of miracles that are sanctioned by the priesthood. the use of these geothermal miracles follows the same dice rules as above, but using the COSMOS score rather than MAGIC. the priest can improvise new spells using the words in the names of the spell, but this is incredibly discouraged.