OE Warp

Batspear a vulture and eel, then have the eel enter a creature shortcut. The vulture needs to be exiting the offscreen den or an unloaded room after the eel travels through the shortcut but before it exits.
If you don't have control of slugcat like in this warp, you'll need to get lucky and have the eel enter a pipe. If you do have control of slugcat, don't drop the batspear until the camera is focused on you or you may softlock yourself. The warp is decently consistent with dev tools, once I figured out how to do it I could get a warp about half of the cycles I tried it on.
I'm pretty certain this method will never be done without dev tools, the RNG needed to have the lizard enter the pipe at the right time is basically impossible to have happen by chance.