I am a big fan of the fantasy genre and this sounds like a very interesting project!
I could do this 3D modelling work using lower polys if for a game or higher polys for if for a film or still rendering. I use Maya as my primary modelling tool and Photoshop for creating texture maps, I would also use Mudbox for more organic shapes (rocks, animals, trees etc) as well as some texture maps.
For simpler models I could produce roughly 2-4 each day while more complex models will take 1-2 days.
My only questions are: is there a concept image/s? what style would this be in (ie. realistic, cartoony)? and would this be for a game, film or rendering?
Thank you for your time and consideration, feel free to email me with any questions :)