Editing Slayers (section)

====Spellcasting Options====
To use a spell, it's customary to know the Chaos Words and Power Words of a spell. In general terms a player can say they are mentally chanting the Chaos Words of a spell to absolve them from needing to speak the incantation aloud. However, a really good roleplayer using a verbal incantation gets a +5 bonus on Fortitude saves to resist drain and on control checks, and an addition +5 bonus on both if they use the Power Words, or name of the spell, to fire it. Furthermore, the DC of saving throws against a that spell are increased by +2. However, since the spell is being verbally stated, anyone within earshot with the adequate knowledge of magic will know what is heading their way, and can prepare to counter or defend against it. If a character might not know the spell by the incantation or naming of it, the GM may call for a Spellcraft check with a DC between 15 and 30, depending on how obscure the spell is, to see if that character knows what's being cast.

While spell drain is usually non-lethal, with the exception of an exhausted character, a non-exhausted spellcaster can choose to give their all into a spell. By choosing to take lethal damage, the player gains a +5 bonus to Fortitude saves and control checks with that spell, stacking with the bonuses from the Chaos and Power Words, if used.

There is also cooperative spellcasting.
:'''Combination Casting''': Two or three characters can agree to use a single spell, and must declare a primary caster. The group will then cast the spell using the primary's Fortitude save and control check. The primary, however, gains a bonus on these checks equal to the caster level of their assistant, and potentially another bonus of one-half the caster level of their second assistant. Spell drain is divided equally among the group, with the remainder being given solely to the primary caster.
:'''Spell Boosting''': If a spell has a sustained effect, another spellcaster can choose to amplify the effects of a spell already in effect. To do this the player must make a Spellcraft check (DC spell's base DC - 10). If the check fails, there's no effect. If it succeeds, one of two things can happen. The first is that the spell's effects are enhanced by one-half of the assistant's caster level. Alternatively, the caster can choose to apply a singel metamagic feat to the spell, though the DC increase brought on by this metamagic cannot be higher than the assistant's caster level. Spell drain is divided evenly between all participants, with the original caster taking the remaining damage.
:'''Multi-casting''': Rather than coordinating players into casting one spell, multiple players can choose to cast the same spell normally against the same target for a magical amplification. The area of effect of a combined spell is multiplied by the number of people casting the spell on that area; two people doubles it, three triples, and so on. The damage is also multiplied in this way. If the area of effect or damage of the spells being cast are different, use the larger of each value. The spell's DC, if any, is the highest DC value of the individual spells, including the appropriate Ability modifiers. For the purposes of penetrating spell resistance, use the combined caster levels of all participants' caster level.