Belgarath, The Eternal Man

When Belgarath, The Eternal Man enters the battlefield, reveal the top {x}cards of your library.
Put them into your graveyard. You may put a
card from your graveyard into your hand.
{t}: Scry 1, then manifest the top card of your
library.
{p/g}: Regenerate Belgarath, The Eternal Man.
{4}{w}{b}{g}, Exile 4 different card types from your graveyard, Sacrifice a {w},{b}, and {g} land:
Transform Belgarath.