Merida, Spelldancer

Partner with Myr, Eyes of Merida
Eminence — You may cast Booming Blade from
exile.
First Strike
You may search your library or graveyard for
a card named Booming Blade and exile it. Then
shuffle if you searched your library this way.
While Merida, Spelldancer is on the battlefield
you can cast sorceries with a mana cost of 5 or
less as though they had flash.