Scroll False Image

All melee attacks made against the caster suffer a 50% miss chance. Before making an attack roll, would be attackers must roll a d20 to determine if they can hit the caster. If the result of that roll is 1-10, that attack roll can be made. If the result was 11-20, the caster cannot be hit that round.

Cannot be cast on other targets

The net effect of this spell–a 50% miss chance–is identical to mirror image. But unlike mirror image, the effect of false image lasts for the entire room, not just one attack.

Note: This spell does not stack with other effects which increase miss chance.