Xavier, Renegade Angel

When Xavier, Renegade Angel enters the battlefield or attacks, Ramble On. (Exile Cards
from the Top of your library until you Exile a Saga,
Then you may put that card onto the battlefield under
your control.)
Whenever a saga would be put into
the graveyard from the battlefield draw a card,
then you may put a saga from your hand onto the battlefield under your control.