- Use Swallow's Nest with a level 4 winged beast to get Harpie Queen or a Harpie Lady monster to instantly destroy a spell/trap while this card is on the field.
- Remember that, if the enemy does not have any spell or trap card in his field, summoning a Harpie while this card is activated will need you to destroy one of your OWN spell or trap cards. Even if you don't any spell or trap card on the normal field, summoning a Harpie will destroy this card by its own effect.
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