A Mob Idea To Be Added With The Cave Update

I have an idea to make the area where warden's spawn more scarier, that being a mob. The mob would look similar to a creeper but have this dark blue and turquoise and has some mushrooms coming off its body. The whole idea of them isn't to kill the player, but to make as much noise to attract wardens and maybe distort the player by giving blindness. The mob wouldn't explode but the mushrooms would, this also brings up the mushrooms would regrow in 10 seconds and explode again when near a player. I don't have a name for it (mainly because I'm not good making names) but this is my idea and I hope you'll consider this.