Arcane Undead (3.5e Template)
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 Arcane Undead
So in otherwords a Lich.
This is what happens when a spell caster dies and is returned from beyond the pale. A fragile undead capable of casting spells as it did in life is the end result. To round a corner and face a group of skeletons capable of casting fireball spells isn't a pleasant thought. Often times the abilities of these undead isn't found out until it is too late for the victims of the creatures. Those that do survive such an encounter are dismissed, for the thought of a "mindless" corpse throwing around spells just sounds ridiculous to the average person...
 Creating an Arcane Undead
This template can be added to any unintelligent undead. The most common candidates are people who die in areas brimming with arcane power and those who were spell casters in life. To determine the caster level of the modified creature, the caster level is equal to the base creature's HD cut in half and rounded down. The base creature retains all the spells it knew in life. If more HD are gained by the creature, the hit points are rolled normally, and the total amount has a fourth of the hit points removed.
Example: A 13 HD monster would cast as if it were a wizard of 6th level.
The base creature retains the Intelligence score it had in life to determine spell strength, but is still treated as mindless. The base creature only has three quarters. hit points (rounded down). +4 wis, +2 Int, and +2 constitution
--Nick 16:24, 17 April 2009 (MDT)