Guardian Elma (DCR-EN005) - Dark Crisis (25th Anniversary Edition) Unlimited

This card can only be Normal Summoned, Flip Summoned, or Special Summoned when there is a Butterfly Dagger - Elma on your side of the field. When this card is Summoned successfully, you can select 1 appropriate Equip Spell Card in your Graveyard and equip it to this card.