Ebigane

Creature from the folklore of Cameroon, Gabon, and Equatorial Guinea. Based on the common folksongs and descriptions, this is a created creature and thankfully, there only seems to be one of them. Described as a horrifying combination of a rat, a bison, a bat and a vampire, it was created by the folkloric hero, Mefoumou Mba Foumou to destroy a fence made of snakes. He appears to have used a rat as the base for a transmogrification spell of some kind.

Strongest transmog spell I've ever heard of. -Dex

I think I'm insulted on behalf of my kin. - Lilja
https://abookofcreatures.com/2020/11/16/ebigane/ - Sourced 12/17/2020