Calamity Ganon Purge Of Hyrule

When Calamity Ganon Purge Of Hyrule enters
the battlefield, Exile all cards from all opponents graveyards.
{7}{b/r}{b/r}, Destroy target creature.
When Calamity Ganon Purge Of Hyrule leaves
the battlefield, you may search your library
and/or graveyard for a card called
Dark Beast Ganon
" that... is calamity Ganon. It brought ruin and corruption to the kingdom of Hyrule 100 years
ago."-King Rhoam Bosphoramus Hyrule