Kalamar, the Watcher

If Kalamar, the Watcher would become the target
of a spell or ability an opponent controls for the
first time this turn, copy that spell. You may
choose new targets for the copy and the original.
{t}: You may cast an instant or sorcery card in
your opponent's graveyard and you may use mana
of any color to cast it. Exile that card. You may
not cast spells exiled in this way.