Veldor's Magic Mirror

When you are the target of a successful spell attack - you may conjure a mirror between you and the caster in an attempt to deflect or reflect the attack.  When you cast this spell, roll a spell attack of your own.  If your attack roll is greater than the attack roll of the original caster, the spell is reflected, with half of the spell's damage, and all special effects, dissipating.  The caster will receive half the damage of the original spell attack.  If your attack roll is lower than that of the original caster - the mirror shatters, and you take half the damage of the original spell as well as any special effects as per the rules of the spell.  If the mirror is not shattered, it continues to hover in front of you - protecting against subsequent spell attacks until shattered or the start of your next turn.