D&D Scenery: Hydra Throne for Tomb of Annihilation

Ras Nsi's Throne Room (area 11) in the Fane of the Night Serpent of Tomb of Annihilation features an iron throne carved in the likeness of a hydra. The map shows it as a single square item.

When experimenting with ideas for this, I decided to take quite some liberties. I wanted a sense of grandeur. This version now covers 8 squares roughly, with two being the hydra's body emerging from the ground, and one being the dais I went for instead of a traditional throne. Given that Ras Nsi is a Mali