Spirit Channelling

While the concept of several spellcasters working together to cast more powerful spells is easy to understand, it is a concept that needs to be clearly thought out, lest it imbalance the game. I propose this as a basic spell for the action in the field concept, while more powerful spells using altars will later be introduced to allow the 'fleecing of the spiritual sheep' during temple services.

Spell Name:   Spirit Channelling

History:  early spellcasters soon learned the advantage of working together.

Maximum Casting Time:   cannot exceed 1 round or the length of the spell the caster is channelling to aid, whichever is longer.
Minimum Casting Cost (Base Duration):   40 (instant)
Overage Effect:   all overage is donated to target caster, whose spell this caster is trying to aid.
Spell Effect:   the caster aids a fellow caster by adding the overage of this spell to their spellcasting effort.

Range:   touch recipient caster or that caster's target.