The Battle of the Morannon

(You may cast a legendary sorcery only if you control
a legendary creature or planeswalker.)
Exile cards from the top of your library until you
exile a creature or planeswalker card. You may
cast it without paying its mana cost. Put the
exiled cards on the bottom of your library in a
random order.
Epic (For the rest of the game, you can't cast spells.
At the beginning of each of your upkeeps, copy this
spell except for its epic ability.)