Poison in an MMO game always throws a wild card into the mix in any combat situation... it's the Status Ailment condition that makes any encounter a grave and desperate one, even if you manage to win the bout and best your foe... only to drop seconds later from toxic load inundation. So the Toxic Elemental Slime was enlisted to become part of the host of critters and creatures in Pantheon: Rise of the Fallen, just to make things interesting...