An Idea for a new mob (The Draiser!)

Hi Mojang / Minecraft team,

My 6 year old son has decided to make a new mob in minecraft and i would like to share it with you.

Id like you to meet the Draiser!

The Draiser is a new mob addition to the Creeking Forest.

If you see the photo, the Draiser has spider-like legs, Zombie-esque arms with a glowing chest/core. The head is 'charged' with glowing eyes and serpent like teeth.

This mob hides in the trees so not easily seen straight away, but once it sees it charges for you, picks you up by its spider legs and smacks you against the ground (My sons exact words) 

The detailed description stops there! id love to hear feedback and also how it could be improved!

I want to thank you for given myself, son & daughter endless fun in an infinite creative world.