- This card can be searched by "A Cat of Ill Omen", "Trap Trick" and "Lilith, Lady of Lament".
- This card is best played immediately after your opponent activates an effect that adds a card to their hand (whether from the Deck or Graveyard, or from banishment) or returns a card on their field to their hand, so that you know exactly which card to call.
- If a specific Ritual Spell Card is played, chain this card to call the Ritual Monster that it summons, and interrupt the Ritual Summon.
- If your hand contains only "Dark World", "Fabled" or "Danger!" monsters, you can activate this card even if you would call a card that your opponent does not have in their hand, so that you discard a card whose effect would be activated.