Tiamat is the insanely powerful five headed dragon goddess from the Dungeons and Dragons roleplaying game, and one of the only named dragons I have ever drawn.
Arguably she is one of the most powerful beings in existence and certainly the most badass token I have also ever drawn as well. The name is taken from Tiamat, a goddess in ancient Mesopotamian mythology.
She is also a default member of the D&D pantheon, the queen and mother of evil dragons and resides in the first plane of the Nine Hells.
As you can see from the display image this is an absolutely massive token, I put one of the dragons from smaugust next to her for scale and its kind of crazy!