Moon Shade (Japanese: ), abbreviated Moonshad, is a skill used by Alys in Phantasy Star IV: The End of the Millennium. It inflicts paralysis on all affected enemies. Alys's dexterity stat, each enemy's mental stat, and each enemy's psi sensitivity affect moon shade's success rate. Enemies immune to psi effects, particularly Machines, Saber Warriors, Ghosts, and most bosses are immune to Moon Shade.
Alys learns Moon Shade at level 10, and must be equipped with a slasher to use it.