Fortune is Fickle (7+)

Remains in play. Range 24". Any double the victim rolls to cast a spell is a Miscast. Any double rolled by opponent to dispel will fail. Lasts until dispelled, Mage chooses to end it, attempts to cast another spell or is slain.
Malign spirits drag and pull at the unfortunate spellcaster, distracting and confusing his attempts to work magic.