Adding units to the Tavern

I need to know if it's possible to add my own Hero's to the Tavern, so they can be accessed during any stage of TFT (with a Tavern). Also I need to know how it's done.

Secondly, why can't I edit *.mdx files in Maya? What modeling program is associated with *.mdx extentions?

Fanx!

wrong forum
edit: in case you dont understand, you're asking two questions in one forum, both which are unrelated

Whatever. :<

To add heros to your tavern all you have to do is good under sold heros and then you can buy em there.