Sadb: Irish Celtic Goddess of Intrigue and Seductive Provocation, whow what a title!

So what are you today
a bear or a beautiful goddess?
Wondering alone in the forest
under the spell of the wizard
while Finn Maccool is desperate to find you.

The wizard's magic spell is strong, even for a goddess
and you shift shape against your will
The only thing that Finn would find in the end
is your boy Oisin, the "Little Fawn"
and a famous poet he will become.