I am interested! though I think I counted 5 people already... I shall try anyway, because I absolutely adore playing summoners and coming up with interesting creatures :D

Can the creature be a 'reimagined' version of something from one of those themes?

On another note, I don't tend to like being in the 'lead role' [aka, the master summoner] but if nobody else does, I'd ask, what does that entail for the character aside form just being a better summoner?