Ryu Ryu No Mi, Model: Tiamat

The Ryu Ryu no Mi, Model: Tiamat, is a Mythic Zoan aspect Devil Fruit, that gives the user the power to turn into a five headed dragon known as Tiamat. It was eaten by Zara D. Ursa

Strengths and Weaknesses
This fruit's main strength is that it has no special weakness besides from the fact that in her hybrid form she can only be one head at a time, Zara in her full Zoan form can spew out different elements depending on the head, She also has a stinger on her tail which has a poison which gives the victim an excrutiating death other than that it has the regular devil fruit weaknesses

Fruit Appearance
The fruit resembles a black dragon fruit with red insides with swirls resembling drakes on the skin

History
Zara ate this fruit early into her journey stealing it from a theives guild, She then used her powers to help her future crew and revolutionaires

Trivia

 * Tiamat is the draconic goddess and mother of Chromatic dragons in Dungeons and Dragons
 * Her full form is over 200m tall from stinger to snout