Shadow Bind (Japanese: ), abbreviated Shadow, is a skill used by Seth in Phantasy Star IV: The End of the Millennium. It reduces all affected enemies' agility stat by an amount equal to Seth's mental stat. Seth's mental stat, each enemy's mental stat, and each enemy's psi sensitivity affect shadow's success rate. Enemies immune to psi effects, particularly Machines, Saber Warriors, Ghosts, Dimensional Demons, and most bosses are immune to Shadow Bind.
Seth already knows Shadow Bind when he joins the party.