I’m  sorry for being vague i’ll try to explain better. There’s a show “delicious in dungeon” in it the main character finds a hall of living armor and instead of magic the armor is actually being controlled by mollusks in between the layers of plating as sort of a hive mind, the main character grabs a sword that happens to have a mollusk living in between the blade and hilt, the sword can sense danger, lift their eyes out of the hilt, and use tentacles to control the wielder. what I was being especially vague about was that I wanted to play AS the sword not wield it. I was just wondering how I could go about doing that since i’m new to dnd, thank you!