TitanoBoa Taffy (5e Equipment)
From D&D Wiki
Wondrous Item, rare
An orange taffy with brown spots wrapped, not in wax paper, but in snake skin.
Upon consuming this taffy the user is turned into a Giant Poisonous Snake. The user has full control of the snake, any items or armor are morphed onto the snake and you retain all your intelligence and wisdom but otherwise you are like a Giant Poisonous Snake. The user can use an action to revert back to their original form, another character may cast the greater restoration spell or similar. If the user does not return to their normal form or great restoration is not used, the user returns to their normal form after a long rest.