Ezda, Indecisive Author

When Ezda, enters the battlefield you may exile a creature until target saga leaves the battlefield and
phase out the saga. That creature doesn't return
so long as the saga is in the field or phased.
{1}{w}{w}{u}: Unphase, the saga and draw a card.
You may put or remove one lore counter from
the saga, then you may phase it out again.
"Maybe I shouldn't have Gideon slay the dragon
with a black sword?"