Vanilla Miscast Magic

Miscast Magic

Level: 3
Sphere: Chaos
Range: Visual range of the caster
Duration: 1 turn
Casting Time: 5
Area of Effect: 1 target
Saving Throw: Neg.

Any spellcasting creature that is affected by this spell has its casting ability severely disabled. When the creature attempts to cast a spell, it suffers an 80% chance of failure. Creatures can save vs. Spell to avoid the effect, but do so with a -2 penalty.