Lauda of the Moon

First Strike
When Lauda of the Moon enters the battlefield
or attacks, target instant or sorcery from your
graveyard has flashback until end of turn. The
flashback cost is equal to its mana cost. (You may
cast that card from your graveyard for its flashback
cost. Then exile it.)
Whenever you cast a spell for its flashback cost,
Lauda can't be blocked until end of turn.