Skeletal Mage
CREATURE 5A creature with void healing draws health from void energy rather than vitality energy. It is damaged by vitality damage and is not healed by vitality healing effects. It does not take void damage, and it is healed by void effects that heal undead.
When a skeletal mage casts a spell, either it gains temporary Hit Points equal to the spell's rank for 1 round, or one target takes 1 void damage per spell rank (if the spell already deals void damage, combine this with the spell's initial damage before determining weaknesses and resistances).
The skeletal mage can freely heighten the spells marked signature.
The skeleton mage causes the next spell they cast to affect a wider area. If the next action they use is to Cast a Spell that has an area of a burst, cone, or line and does not have a duration, increase the area of that spell. Add 5 feet to the radius of a burst that normally has a radius of at least 10 feet (a burst with a smaller radius is not affected). Add 5 feet to the length of a cone or line that is normally 15 feet or smaller, and add 10 feet to the length of a larger cone or line.