Temple to Moriyah

Temple to Moriyah enters the battlefield
tapped.
{t}: Add {u} or {b} to your mana pool.
{u}{u}{b}{b}, {t}: Until end of turn, Temple to
Moriyah gains "Each instant and sorcery card
in your graveyard has flashback. The flashback
cost is equal to that card's mana cost."
There is no crown that lasts forever.