Lawachurls are always encountered in an "unarmored" form. Upon engaging the player in combat, they will roar and generate elemental armor. While the armor is active, the Lawachurl's attacks deal elemental damage of its type and are further enhanced. Like Fatui Skirmishers, this armor does not fully protect them from incoming damage. The armor can be removed with any attack, but some elemental reactions are far stronger than others.
When the armor is fully removed, the Lawachurl shakes the remnants off, taking slightly more damage and their attacks become significantly weaker. The player has about two minutes to defeat the Lawachurl or it will roar and reapply the armor on itself again.