I'm a pretty big fan of tribal decks, and this seems like a ton of fun. I would recommend focussing your cards more though. For example, Pack Rat seems like one of the major players in this deck, I would definitely suggest bumping it up to 4 copies. Instead of spreading yourself thin, you should pick the best rats and run 4 of (most of) them. Typhoid Rats is another one I think should definitely be a 4 of.
I know they cost alot of mana, I think Marrow-Gnawer and Thornbite Staff should be bumped up to 2. Youu have alot of mana ramp, so that shouldn't be too much of a problem. But if it is, you could always run a Nykthos, Shrine to Nyx or two.
Also, no, this deck is not Modern legal, but I think it works better as a Casual deck. Too many of the key cards would have to removed for Modern play, I don't think the deck would be at all viable in Modern.
+1 from me though!
August 25, 2017 6:32 p.m.
Also Bad Moon should absolutely be ran as a 4 of, especially in a deck so reliant on 1/1s.
August 25, 2017 6:36 p.m.
Awesome suggestions, yeah I probably should have seen omissions like dark moon sooner. Definitely making some changes.