continue to backport old code

app/models/wow_pet_ability.rb

@@ -0,0 +1,10 @@
+class WowPetAbility < ApplicationRecord
+  extend Mobility
+  translates :name, :translated_battle_pet_type
+
+  has_many :learned_pet_abilities, dependent: :destroy
+  has_many :wow_pets, through: :learned_pet_abilities
+
+  validates :name, presence: true
+  validates :ability_id, presence: true, uniqueness: true
+end