Cyber Dragon Core

When Cyber Dragon Core enters the battlefield,
search your library for a colorless non-creature
spell, reveal it, then add it to your hand and
shuffle your library.
Flashback {c}{c} (You may cast this card from
your graveyard if an opponent controls more
creatures than you as a sorcery that read "Put an
artifact Dragon from your library onto the
battlefield, then shuffle your library," then exile it.)