This reminds me a lot of the Kathreptis from the Ark Survival Evolved Aquatica DLC. the Kathreptis (Sea moth) will randomly transform into different creatures when attacking, so potentially you could "turn into" a mosasaur, or you might get stuck with being an anglerfish during a fight as you have no control of what it becomes. another thing the sea moth can do is turn invisible, much like the desmodus except it can be any time of day/night and it will still work. overall i think its a lot like the Kathreptis (which for some reason is not on Dododex). one more thing, I really would have prefered them to just make it an oversized chameleon instead of a dinosaur mixed with a chameleon as now it looks like a fairy tale creature

P.S. please Dododex Mod/Dev please add the Aquatica dinosaurs here as it is very hard to actually figure out how to tame new weird passive tames. thank you all for hearing my opinions and y'all stay positive!

-Rock Elemental Gaming-