Yeah, Aquatics need the Amulet of the Fish to compete, but they're still valid. Losing that misc slot hurts though. Edit- see below.
Also be aware that Claws of Kokytos and Banish to the Inferno are banned now (first post updated), and scripts that provide 10 blood slaves with the ambiguous command to Cast Spells without a script will only be allotted 8 levels of Blood magic research instead of the usual 9 so you don't "accidentally" break the rules.
@DigitalSin- Sandals of the Crane is a unique artifact and isn't allowed. Once you choose different boots and bestow a name upon your creation, however, I'll add your combatant to the roster.
There are currently 12 combatants enrolled for the contest.
Edit: If you want to choose an aquatic, I'll mod in an extra misc slot on your chassis for fairness (the amulet of the fish must go there). Sound ok?