Once per turn, before damage calculation, when a “Rahi” monster you control battles an opponent’s monster: You can place 1 Comet Counter on that opponent’s monster, and if you do, it cannot be destroyed by this battle. During the End Phase: Take control of all monsters with Comet Counters your opponent controls. If this face-up card leaves the field: Remove all Comet Counters on the field and inflict 400 damage to your opponent for each, then return control of all face-up monsters on the field to the owner.