Okay, so now that we've gotten the prerequisites out of the way, let's get in to what happens when someone actually casts a spell.
Note: Keep in mind that I have not yet delved into the specifics of translating AD&D spell effects into SoG nor the modifiers and difficulties, so just "bear with me" through the spell examples and the "accounting".
Note: Keep in mind that I have not yet delved into the specifics of translating AD&D spell effects into SoG nor the modifiers and difficulties, so just "bear with me" through the spell examples and the "accounting".
A spell is cast by one of two basic methods:
- Cast a pre-made spell "By the Book" (Wizardry)
- Make up a spell and see what happens (Sorcery--covered in the next entry)
Spell Basics
These apply to all spells, regardless of which two methods above is used. Casting is typically NOT a contested skill roll. It's normally uncontested as the caster is instead beating a predetermined difficulty. However, circumstances might cause a spell to be more difficult (or easier) to cast.
A spell is normally defined as one or more benefits. The greater the benefits, the greater the difficulty. A spell can also consist of certain requirements that must be met on the caster's part. These requirements usually will reduce the difficulty. Requirements can consist of:
- Takes time to cast (during which the caster cannot be interrupted without losing the spell)
- Requires the caster to speak certain words (Verbal Components). I'm assuming here that the caster would likely have to speak at least at a normal tone or louder.
- Requires the caster to use certain gestures or movements (Somatic Components). I'm also assuming here that both hands are required, along with freedom of movement.
- Requires the caster to expend certain magical reagents (Material Components)
- Requires concentration during the spell's duration (during which the caster cannot be interrupted without losing the spell)
Temporary Aspects
All these requirements above would be expressed by the placing of temporary aspects upon the caster, during the casting or perhaps for the duration of the spell. If the aspect cannot be placed upon the caster, the caster CANNOT cast/maintain the spell. These temporary aspects could then also be tagged by those trying to counter the casting. This then opens up quite a few gameplay opportunities:
- Finding interesting ways to try to tag an opponent caster's aspect of "Concentrating furiously" or "Magical Gestures"
- Spell combat where opponents try to tag each other's aspects based upon identifying what is being cast
- Trying to cast spells where you limit what temporary aspects a caster can take: casting Silence to remove the ability to speak or casting Web or Entangle to prevent gestures (or accessing material components).
- Guards being able to detect an otherwise-hidden caster by tagging his "Speaking Words of Power" temporary aspect.
...I'm only scratching the surface, here. But hopefully you see the gameplay potential.
Casting a Spell "By the Book"
This is the method of generating effects that stays closest to the AD&D source material: A pre-determined spell is referenced and then cast by someone (whether from memory, from scroll, or spellbook).
Remember that the real benefit to casting a pre-determined spell "as is" is that the caster will be able to roll 2DF+2, instead of 4DF. This means that as long as you are casting within your skill level, there is no chance for failure--only for positive shifts.
Example:
The 1st Level pre-made Wizard Spell "Armor" nets out to difficulty of Average (+1). As a glimpse of what's to come, the spell lists out like this:
Therefore the net difficulty is (1+1+1-1-1=+1) is Average (+1) to cast the Armor spell.
As long as a Wizard has a Magic Skill of Average or better, and fulfills the requirements...
...2DF+2 are then used for the skill roll.
So, if a Wizard with a Magic Skill of Good (+3) meets the requirements and rolls the following: [-] [-] + 2 = 0 dice roll for net skill result of Good (+2 shifts over the skill difficulty of Average), the spell was successfully cast upon the target with an MoS of +2 that counts towards Duration / Durability of the spell (in this particular spell's case).
- Benefit: Target gets "Light" (Fair, +2) armor. (+1 to difficulty)
- Benefit: Alternate Useage: Armor effect is "magical" and is not physical. (+1 to difficulty)
- Benefit: Reduce Casting Time by 1 shift to now be "Single Exchange" (+1 to difficulty)
- Requirement: Material component required (Finely Cured Leather, Common, -1 shift)
- Requirement: Somatic component (Gesturing) required (-1 shift)
- Variable: Margin of Success (MoS) counts toward Duration / Durability (no modification to difficulty)
- Range: Touch (no modification to difficulty)
Therefore the net difficulty is (1+1+1-1-1=+1) is Average (+1) to cast the Armor spell.
As long as a Wizard has a Magic Skill of Average or better, and fulfills the requirements...
- Has a scrap of finely cured leather
- Can gesture
- Is uninterrupted for a single exchange's worth of time
...2DF+2 are then used for the skill roll.
So, if a Wizard with a Magic Skill of Good (+3) meets the requirements and rolls the following: [-] [-] + 2 = 0 dice roll for net skill result of Good (+2 shifts over the skill difficulty of Average), the spell was successfully cast upon the target with an MoS of +2 that counts towards Duration / Durability of the spell (in this particular spell's case).
Modifying a Pre-Made Spell
This is something of a hybrid between the first two spell-casting scenarios. It's entirely possible that a caster might end up in a situation where he wants to generate a spell but for whatever reason, the requirements cannot be completely met. Play situations might be:
- Using a previous example, hiding from guards walking nearby, but still wanting to cast a spell that requires speaking. The caster could try to cast the spell without speaking, in essence changing the recipe.
- Trying to cast a spell without material components, because your bandolier of spell components was taken during the night.
- Trying to shorten a casting time to minimize exposure in the middle of a melee.
The primary impact of this "changing the recipe" then would be that the caster no longer can use the 2DF+2 roll, and must now roll 4DF (and thus have a chance of failing the casting).
OPEN ITEM: Since this a modification of an existing "recipe", I am currently thinking the 4DF requirement and any increase in difficulty (see below) is enough penalty will be sufficient and let this be a skill-based roll.
Replacing something in the "Recipe"
If the caster replaces one requirement with another: perhaps choosing to speak instead of gesture, the difficulty of the spell would remain, but the skill roll would be 4DF, instead of 2DF+2.Removing something from the "Recipe"
If the caster attempted to cast the spell by removing some requirement (this includes "hurrying-up", as you are removing time shifts), the spells difficulty increases per shift removed and the skill roll must be made at 4DF, instead of 2DF+2Making a spell easier by adding something to the "Recipe"
It's also possible that an additional requirement could be added to make a spell easier to cast or to improve the effectiveness of the spell. The most common version of this would likely be increasing the amount of time to cast a spell (i.e., going slower to get it right thus increasing the potential for success or a greater MoS). This would reduce the spell's difficulty accordingly (wait for the Spell Benefit / Requirement / Modifier writeups), but would still require a 4DF roll.Magical Stunts to Substitute for Spell Requirements
While I haven't written these out yet (cuz I haven't needed them yet), I think it's entirely plausible that SoG could have character stunts that would "replace" certain spell requirements. I recall that 3E AD&D had a bunch of these sorts of stunts and I see no reason at this point why they couldn't be included to flesh out the SoG's spellcasting...Some examples might be...
- Silent Casting (used in place of a Verbal component)
- Concentration (used to counter being distracted during combat)
- Quick Casting (used to reduce any spell casting time by 1 shift on the time chart)
...again, the possibilities seem pretty tasty.
My current position on these sorts of stunts is that they DO NOT modify the spell and are still eligible for the 2DF+2 roll. So using the Silent Casting with a spell that requires a Verbal component would still make the user otherwise eligible for the 2DF+2 roll.
