EKKAΘAPIΣTE MIΓAΔEΣ KAI AKAΘAPTA - Young Justice: The Comic

This despicable enchantment, EKKAΘAPIΣTE MIΓAΔEΣ KAI AKAΘAPTA (Ekkathariste migades kai akatharta) roughly translated as "Clean the impure and half-breeds," uses ancient Atlantean blood magic to strip away another's powers, leaving them weak and vulnerable. While it had no effect on those directly descended from the original Atlanteans of Old Atlantis, close proximity and prolonged exposure to the spell could lead to permanent power loss and in extreme cases death. 

On September 7, 2010, Ocean Master successfully cast this spell, combining the power of Neptune's Trident and the life force of Queen Mera Nereus to do so. This allowed his cult of Atlantean Purists to ambush and attack those in Poseidonis they deemed "impure" and inferior.

However, before they could cause permanent damage, the young Atlantean Garth thwarted Orm, using the powers of the Tempest to momentarily disarm the prince. Separated from the trident, this break in concentration was enough to reverse the spell.

Neptune's Trident - Young Justice: The Comic

A powerful magical artifact used by the masked super-villain Ocean Master, Neptune's Trident is a deadly weapon in his hands, making him a dangerous opponent capable of defeating even High King Orin in single combat.

Though it is not inherently evil, it can be used to channel cruel and devastating enchantments. The trident has the ability to drain the life force out of its victims and steal or redirect a target's magic. 

Additionally, it can tap into ancient blood magic and perform a hex so powerful that it could seriously weaken anyone who is not directly descended from the first Atlanteans.