Because normal crocodiles clearly didn’t have enough sharp bits. Also, why are the horns curved to point almost directly at the croc’s eyes? From an evolutionary perspective, I fail to see the advantage.
Who in their right mind says, “You know what I need? A horn that projects screaming ghosts when I blow it.” Why is there so much screaming around here? Oh right. Cause THE MTG MULTIVERSE IS A TERRIBLE PLACE TO LIVE.