Quick and Dirty Slow Casting Magic System for LotFP

A simple and completely untested variant system for casting spells in Lamentations of the Flame Princess. It should also work with other OSR games, but LotFP allows mages to wear armor and use weapons, which makes a severe toning down of spellcasting much less disruptive for players.

Spells work pretty much the same way under this system except that you don’t need to prepare spells in advance and all casting times are at least 1 minute (10 rounds) long. You still need to have spell slots available which are used up for the day when a spell is cast. The effect is that spellcasters become much more flexible in picking their spells when the situation comes up but at the same time lose the ability to quickly intervene with spells in the middle of a fight. All magic requires at least a bit of time to prepare during which the spellcaster can easily be interrupted by any hostile creatures or violent environment conditions.

Many spells need to be cast from hiding, either in cover or in plain sight, to be of any use. I think that I would rule that it’s sufficient for a spellcaster to stand or sit and do nothing and quietly recite the magical incantations at low volume. It would be easy to spot by people who are standing close enough to the caster to hear the magic words or who are keeping an eye on him. Loud background noise or some kind of distraction would be necessary to cast a spell unnoticed while in a crowd. The changes also make a good number of spells effectively useless. The following spells I’d remove from the game. (Fireball and lightning bolt are already not part of the LotFP rules.)

Cleric Spells

  • Command
  • Heat Metal
  • Protection from Evil
  • Protection from Evil, 10′ Radius
  • Remove Fear
  • Sanctuary
  • Silence

Magic-User Spells

  • Army of One
  • Chaos
  • Confusion
  • Death Spell
  • Faithful Hound (if the duration is indeed correct)
  • Feather Fall
  • Globe of Invulnerability (Greater and Lesser)
  • Grasping Hand
  • Haste
  • Hold Person/Monster
  • Interposing Hand
  • Lucubration
  • Magic Missile
  • Magic Sword
  • Maze
  • Mirror Image
  • Mnemonic Enhancer
  • Power Word Kill
  • Power Word Stun
  • Prismatic Spray
  • Ray of Enfeeblement
  • Spell Turning
  • Witchlamp Aura

Modified Spells

  • Charm Person/Monster: The target makes a saving throw at the start of the casting of the spell. If it fails it will simply listen to the casters words and not take any action unless the casting is interrupted by an outside source. The caster of the spell does not look like he is casting a spell on the target but has to keep talking for the entire casting time and observers might notice something strange going on with the target.
  • Enthrall: The crowd starts listening to the caster immediately but can only be persuaded to do something after at least a minute of talking to them has passed.
  • Polymorph Others: The target of the spell slowly begins to change during the casting time but reverts to its original form if the spell is interrupted in any way.
  • Sacrifice: The caster has to be in contact for the entire casting time of the spell, usually making it necessary to restrain the target.
  • Suggestion: The target makes a saving throw at the start of the casting of the spell. If it fails it will simply listen to the casters words and not take any action unless the casting is interrupted by an outside source. The caster of the spell does not look like he is casting a spell on the target but has to keep talking for the entire casting time and observers might notice something strange going on with the target.

A hazy idea for a new OSR magic system

Work hours have been a bit chaotic this month, with frequent evening hours and weekend workdays, so I have not really spend much of the long hours of tinkering with ideas that usually lead to me writing things. But all the overtime hours will get me a lot of shorter workdays after Christmas and there’s not really much to do in a gardening store in January anyway. There’s a lot of ideas floating in my mind that I want to pursue further on lazy afternoons and loudly proclaim my conclusions.

Right now I am occupying my free periods during the day with thinking about adapting my new idea for a magic system to an OSR rules system. Which actually turned out a bit more tricky than I thought.

The main concept is that all characters have an amount of spellpower that is calculated by adding the modifier from Wisdom to the number of levels in the mage class. A 4th level mage with a Wisdom of 16 would have a spellpower of 6 (4+2). Any time a spell is cast or a ritual performed, there is a chance for a missfire based on the character’s current spellpower score. At the end of the casting the spellpower score is reduced by a certain number. Dabblers in magic have a high chance of misfires when performing rituals (which does not require any specific character class) but so do even experienced mages who have already cast several spells that day. I like the concept but don’t have any good idea for how to calculate the chance of failure and how to make a die roll to check for a missfire.

I also think about having three categories of magic. Spells, which take one round to cas; incantations, which take 1 minute to cast; and rituals, which take 1 hour to cast. Only characters of the mage class can learn spells and incantations of limited numbers, but rituals are open to anyone who gets his hands on the instructions. However, I found that I have really very few ideas for traditional spells that would fit with my image of how magic performs in action.

One interesting oddity I noticed a few days ago is that all the effects I wanted my old magic system to do no longer fit with the new system. And a good number of things I deliberately chose to exclude seem highly appropriate for the new system. (Except teleportation, which is still out.) My old approach was highly inspired by Star Wars and Avatar, which spells being extensions of the body and mind. Now I feel much stronger drawn to witchcraft and sorcery that focus on dealing with external supernatural beings. Having just read Hellboy again (a review is one of the things I want to write) probably had a huge impact on that change of mind.