Torric's Shadow Guardian

Casting this spell creates a shadow which always lurks on the caster – indistinguishable from any other natural shadow.  When cast the shadow remains on the caster for a period of up to 24 hours, or until the caster is struck a physical blow which would result in damage, the shadow automatically sacrafices itself to negate that hit.

Any attack which the bearer of the shadow can see can be blocked with the shadow guardian, a 2h sword, a dart, an arrow even a dragon’s claw. 

The shadow can be dispelled as per standard dispel magic rules.

Higher Levels: for each 2 slots above 2nd an extra shadow can be bound. (4th, 6th, 8th level slots).