Brilliant Rose (POTE-EN021) - Power of the Elements Unlimited

(This card is always treated as a "Gem-Knight" card.) You can discard 1 "Gem-Knight" or "Melodious" card; Special Summon this card from your hand. You can only use this effect of "Brilliant Rose" once per turn. Once per turn: You can send 1 "Gem-Knight" or "Melodious" monster from your Extra Deck to the GY; until the End Phase, this card's name/Type/Attribute become the same as the original name/Type/Attribute of the monster sent to the GY to activate this effect.