Snow on the Beach

When Snow on the Beach enters the battlefield, you may cast an enchantment or artefact. Pay {x} less mana, where {x} is the number of enchantments in your graveyard.
{t}: Add {c} to your mana pool.
Flying in a dream, stars by the pocketful.
You wanting me... tonight feels impossible.
But it's comin' down, no sound, it's all around.