Great Librarian Dak'ir

Flash, haste
{r}, {t}: Great Librarian Dak'ir deals 1 damage
to all creatures. Prevent all combat damage that
would be dealt this turn.
{u}{u}: Scry 2. Exile the top card of your library,
if it is an instant or sorcery spell, you may cast
it this turn. It cost {r}{r} less to cast this turn.