Commission WIP: Cal-mera (chimaera reverse TF) (Patreon)

Calista is on holiday in Greece and decides to show off her new souvenir: a necklace with what the shop called an "Echidna Egg". As she takes her selfie, a strange reaction occurs as the egg disappears into her, leaving a behind a strange slit...

I've been looking forward to submitting this one, especially as this is a tf type I've never really tried before, and also never really seen it done quite like this before.