Noc Ramun's Sepulcher

When Noc Ramun's Sepulcher enters the battlefield, exile all creature cards from all graveyards.
If a creature card would be put into a graveyard from anywhere, exile it instead.
{1}{b}: Target creature you control explores.
Then you may cast a creature you own from exile until end of turn. Creature spells cast
that way cost {2} more to cast.