Cursed Child

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