Woodwalkers is a mod lore-wise based on the book Woodwalkers, and technically-based on Identity.

This mod allows you to choose a second shape, you can transform into at any time you want by just pressing a key!

Walk over lava as a strider, discovery the caves as a bat or let your foes base explode as a ghast! Nearly every mob has some nice abilities!

Even your hearts and your size will be changed to the one of the mob and your nametag will stop rendering, so no one could tell which one is the mob and which one is the player! Trick your friends!