Shield: Reduce Damage by 1. Any damage from spells is reflected. Can not be destroyed or stolen.
I'm not sure this is working correctly. Whenever I play Fire Storm/Rain of Fire against an opponent with the Mirror Shield equipped, the card works normally. The damage isn't deflected or reflected. Of course, that assumes that Rain of Fire/Fire Storm is a spell card. I don't carry other attack spell cards so I haven't really been able to test this out much. Mostly run into this vs. the false god Paradox.