If this card is added to your hand, except by drawing it: You can Special Summon it. If this card is Normal or Special Summoned: You can Set 1 Spell/Trap from your Deck that mentions "Harpie Lady". During damage calculation, if your "Amazoness" monster battles an opponent's monster: You can activate this effect; for that battle, neither monster can be destroyed by battle, also you take no battle damage. You can only use each effect of "Amazoness Fighter - Instant Kill Dance" once per turn.