Bunny shape confirmed, it's a reward from a pet battle world quest in Ardeanweald "lurking in the shadows" next to Darkreach. It's up today in EU.
Bunny soul up today as a pet battle in Ardenweald :)
The bunny soul is from a pet battle world quest in ardenweald
Got Bunny Soul from the pet daily in Bastion
Bunny Soul is a pet battle World Quest reward option it seems. Got mine today in Maldraxxus
is this going to be updated with current knowledge on how the soul shapes drop?