Minecraft:Mob Mode!

I'm pretty sure I'm not the only one who's always wanted to roleplay as a mob. In this mode, alongside creative, survival, adventure, and hardcore, when spawned in, you'll spawn in the overworld, nether, or end as a random mob. This mode disables achievements because when you're a mob, you have their abilities. But, if killed, you'll respawn as a different mob. When killed, you do not drop items except your inventory