Waterweaver Shaman

Whenever you cast an instant or sorcery, put a
charge counter on Waterweaver Shaman.
Remove five charge counters from Waterweaver
Shaman: You may cast instants and sorceries from
your graveyard this turn. If a card cast this way
would be put into your graveyard, exile it instead.
"Feeling a sense of deja vu yet?"