hong said:
So post the relevant passages, then. Where, exactly, do the rules explicitly state when to go by the spell description?
From the core rule books and the SRD:
a spell-like ability works just like the spell of that name.
...
A spell-like ability has a casting time of 1 standard action unless noted otherwise in the ability or spell description. In all other ways, a spell-like ability functions just like a spell.
- PHB, page 180 and the file MagicOverview.rtf
I'd like to note at this point that both the SRD and PHB say the same thing (except that the SRD lacks the examples in the PHB). On page 142 of the PHB (the file CombatI.rtf of the SRD), it says that using a SLA "is 1 standard action, unless the ability description notes otherwise", and the file MagicOverview.rtf of the SRD (page 180 of the PHB) says that using a SLA is "1 standard action unless noted otherwise in the ability or spell description." So the PHB and the SRD don't contradict each other so much as the rules contradicting themselves.
Continuing on:
Spell-like abilities are magical and work just like spells (though they are not spells and so have no verbal, somatic, material, focus, or XP components).
...
A monster’s spell-like abilities are presumed to be the sorcerer/wizard versions. If the spell in question is not a sorcerer/wizard spell, then default to cleric, druid, bard, paladin, and ranger, in that order.
- MM, page 315 and the file TypesSubtypesAbilities.rtf
And from Skip's article:
A spell-like ability is a magical trick that works exactly like a spell of the same name.
...
Some spell-like abilities duplicate spells that are not subject to dispelling; if so, the spell-like ability also is not subject to dispelling.
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Some spell-like abilities duplicate spells that are not subject to spell resistance. If so, the spell-like ability also is not subject to spell resistance.
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A save DC for a spell-like ability is calculated the same way a save DC for a spell is calculated.
...
The user's Charisma modifier affects the ability's save DC no matter what spell the ability duplicates.
...
To determine the spell level for a spell-like ability, always use the level for the sorcerer/wizard version of the spell. If the spell has no sorcerer/wizard level, use cleric, druid, bard, paladin, or ranger level, in that order. Sometimes a creature's description will specify a kind of caster for the creature's spell-like abilities. If this is so, use the appropriate level for the spell-like ability.
hong said:
From a random monster out of the MM (Ogre mage):
Spell-Like Abilities: At will -- darkness, invisibility; 1/day -- charm person (DC 14), cone of cold (DC 18), gaseous form, polymorph, sleep (DC 14). Caster level 9th. The save DCs are Charisma-based.
You know, I am really failing to see any part of those ability descriptions that actually says _what you do with them_.
Of course not. The ability description doesn’t give all the information you need to know to know on how to use them. That’s what the rules on SLAs are for.
hong said:
So where, exactly, do I find what these abilities do? In the equipment chapter, as mentioned previously? Or since that seems to bother you, maybe the classes chapter?
If by "what they do," you mean the effects, according to the SLA rules, you look up the spell descriptions for the sorcerer/wizard versions of the spells the SLAs mimic because "A monster’s spell-like abilities are presumed to be the sorcerer/wizard versions. If the spell in question is not a sorcerer/wizard spell, then default to cleric, druid, bard, paladin, and ranger, in that order." (MM, 135 and TypesSubtypesAbilities.rtf) In terms of DCs, caster level (for level dependant effects and caster level checks for overcoming SR), and how they interact with spells like
dispel magic and
antimagic field, you use the rules concerning SLAs, which can be found on pages 142 and 180 in the PHG, page 289 in the DMG, page 315 in the MM, in the files
CombatI.rtf,
MagicOverview.rtf,
AbilitiesandConditions.rtf, and
TypesSubtypesAbilities.rtf of the SRD, and parts
one,
two,
three, and
four of Skip Williams' article
All About Spell-Like Abilities.
Now, if by "what they do," you mean how they're activated and what's required (i.e. components, focus, XP cost, time required, etc...), you again use the SLA rules in the locations noted above.