The tentacles awake

You are a Shoggoth. You are a huge, towering tentacle monster with a dark body and many pseudopodia. They can morph into almost any form and shape. You are as big as a house and each tentacle is as big as a human being. You live in an old dungeon that was long forgotten. You were the keeper of the dungeon to protect the old artefacts. But you grew tired since. The artefact that binds you to this place is untouchable by yourself. But if you find someone who can destroy it for you.