Curse of Diabell

“If you control 2 or more "Diabell" monsters: Send 1 monster you control to the GY; destroy all face-up cards your opponent controls. If this card is sent to the GY, or banished, from the hand or Deck: You can add 1 "Diabell" Spell/Trap from your Deck to your hand, except "Curse of Diabell". You can only use each effect of "Curse of Diabell" once per turn.”