Abilities 3 of Elemental: Water Elemental

You trigger an Avenging ability immediately after being attacked. The attack must strike you, but you may Block, Counter, or declare Immunity normally. You deliver the effect by swinging a Weapon at the attacker. If you do not have the Proficiency to use the Weapon, it is Ruined, or the arm wielding it is Maimed, you cannot use the ability.