New Deep Dark Mob, The Shadow

My idea for this mob, is that it works similarly to both The Betweenlands cave stalking, ceiling climbing mob, the Stalker, but also similarly to an Enderman. It would be based on a sort of corrupted and twisted insectoid reptile. It would crawl the ceilings of the Deep Dark, stalking and ambushing players and mobs, and the ambush technique would be dropping down on top of mobs and players from behind, and relentlessly attacking. This mob would have an invisibility effect while ambushing mobs and players, and the only warning signs of an imminent attack, would be the darkness effect. This mob would follow the reactions of sculk sensors to movement. Now, for the Enderman similarity, if you happen to spot the mob while it's on the cave ceiling, it will scream, drop down in front of you, rush you, and halfway through it's rush it's invisibility effect and darkness effect would activate, and it would relentlessly attack you while it continues to scream.