Cursed Child

Whenever Cursed child would be dealt damage
or destroyed, you may put the top three cards of your library into your graveyard. If you do, regenerate Cursed Child.
As long as Cursed Child is in your graveyard, whenever a spell you own named Tribute to the Dead resolves, if you sacrificed Cursed child to cast it, exile them from your graveyard, then
meld them into Prodigy from the Underworld.