Melody Mutant, Nelnympha

/:During your turn, if your opponent has a rear-guard with a Cradle marker, this unit gets +6000. :When this unit is retired from by your card's ability, 1, choose one of your opponent's rear-guards without any Cradle markers, and put a Cradle marker on it. (That unit loses its original abilities, has its reduced by its original , cannot boost nor intercept, and when it is retired, you search your deck for up to one card with the same grade as that unit, reveal it and put it into your hand, and shuffle your deck)