Serenity, Lady of Form

{b}{g}{t}: Exile Serenity, Lady of Form face down,
and create a legendary creature token named
Serenity. The token is one of the following,
a 2/4 black and green bird with flying,
a 1/5 black and green snake with deathtouch,
or a 4/2 black and green wolf with lifelink.
Exile the token and return
Serenity, Lady of Form to the battlefield.
Partner with Breyden, Blessed by Blood.