Cantrip

Cantrips are merely 0-level wizard spells, the spells learned and used by apprentices during their long, rigorous, and tedious training for the craft of thaumaturgy. Most cantrips are simple little spells of no great effect, so when the individual becomes a 1st-level wizard, the knowledge and information pertaining to these small magics are discarded in favor of the more powerful spells then available. However, a magic-user may opt to remember up to four cantrips in place of one 1st-level spell.

This "spell" is actually a game mechanic that gives the caster four "slots" for 0-level spells. Cantrip can be "prepared" as many times per day as the caster has 1st-level spell "slots"; for each extra preparation of cantrip, an additional four 0-level spells may be prepared. The 0-level spells prepared must be allowed to the caster (if a specialist wizard). As with their preparation, four 0-level spells can be inscribed into a spellbook or spell scroll using the same amount of space that would be taken up by a single 1st-level spell.