I thought I might note how each of these mishaps would affect EVERY SINGLE OD&D SPELL but after copying out the 1st-level spells from Delta's Book of Spells I decided I'll just play Risus. So, the rule is whenever you use a sorcery cliché (or some such) and the dice come up 13 you have to take a mishap roll. There will less chance of mishaps if the 13 result is a success.
This table probably requires more referee interpretation than it should. (That's weasel-talk for Some of these result just don't make any sense.) I wrote it that way just so it would be a list of Latinate nouns-derived from-verbs. Are there eggs involved? Happy Easter!
d30 Magical Mishaps
- Bifurcation (roll twice more ignoring 30's (or not--see Recursion (#16) above))
Then you'll want to see who or what to apply the effect to:
- Intended Target
- Other Target (among the people and/or monsters nearby)
- Spell in Caster's Mind
- Spell in Caster's Spellbook
- Spell not in caster's mind
- Original spell itself
- The general area