When a Spell/Trap Card or effect is activated (Quick Effect): You can send 1 Fairy monster from your hand to the GY; Negate that activation, and if you do, destroy it. If this card in its owner's possession is sent to the GY by an opponent: You can add, from your GY to your hand, up to 2 cards with different names that are Ritual Monsters and/or Ritual Spells. You can only use each effect of "Herald of Mirages" once per turn.