| A character able to extend spells (including characters with grandmastery in
a spell) can choose to make it permanent. However, maintaining a spell
indefinitely is taxing, and imposses a penalty on the caster's available mana.
The mana penalty depends on the spell's basic mana cost, casting time, and most
importantly its natural duration - making spells with a brief duration permanent
is far more costly than doing the same for spells of extreme duration. Spells
castable during combat are also easier to maintain than those that are not.
Mastery in extend spell reduces the mana penalty by 40%/60% for M/GM level,
respectively. Mastery in the spell being cast reduces it further by 20%/30% for
M/GM level (these two mastery reductions are multiplicative). Characters without
the extend spell feat gain no mana penalty reduction due to mastery.
Syntax: permcast <spell>
Only spells cast on oneself can be made permanent. While it is still possible
to dispel them, doing so is a little harder than for non-permanent spells.
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