Ars Arcana Blog 2.4: Spells: Points, Slots, and Abilities Travis Joseph Rodgers Do spellcasters in your game use spell points, spell slots, or can they call upon spells like other abilities (like climbing, throwing, and hacking)? Here are three potential problems your magic system will have to deal with and three approaches to solving those problems, with strengths and weaknesses of each approach considered. Part I: The Approaches These three approaches may not be exhaustive, but they do a good job of capturing the typical range of options one might see in an RPG. They are differentiated by the frequency one can cast and the relative customizability of the power of a “readied” spell. Spell Points (SP) Pool of points. Each spell has a cost. More points for more powerful spells. Systems: MERP, Role Master. E.g., Merlin and Magic Martha both cast “flame bolt” spell. Merlin easily pumps a dozen spell points into it, making it devastate his opponents. Martha fum...
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