Eda, the Owl Lady

If an instant or sorcery an opponent controls
would be put in that player's graveyard, you may
exile it instead with a Feather counter on it.
{r}, {t}: You may cast an instant or sorcery with a Feather counter on it from exile. You may spend
mana as though it were mana of any colour to cast
a spell this way.
"Magic isn't proper. It's wild and unpredictable. And
that's why it's so beautiful."