As of Renewal, EDP no longer increases final damage by 400%
EDP level 5 will multiply your weapon atk by 5 times, and your equipment atk by 4 times.
EDP does not change the wielder's Weapon Element to Poison.
EDP is the signature skill of the Melee Assassin Cross. All skills including Soul Destroyer benefit from the high damage increase.
While EDP is active, The following skills will have their skill modifiers halved; Sonic Blow, Soul Destroyer, Cross Impact, Counter Slash
EDP will not increase the damage of Grimtooth and Venom Knife
EDP cannot be dispelled by Dispell.
The poison effect depletes HP significantly faster than regular poison, but cannot drain a target's HP below 1/4th health (in the red). This poison effect also cannot be cured with Detoxify, Green Herbs, Green Potions, or Panacea.