When your opponent activates a monster effect that targets a monster(s) you control, while you control a "Rikka" monster (Quick Effect): You can Tribute this card from your hand or face-up field; negate that effect. If this card is in your GY: You can Tribute 1 Plant monster; Special Summon this card in Defense Position, but banish it when it leaves the field. You can only use each effect of "Hellebore the Rikka Fairy" once per turn.