On the subject of what this deck plays against, I used to run the original version against AI4 as an unupped score grinder (before I found ways to play silver unupped at least). It works pretty well there. It works against AI3 as an EM score grinder also, but seems to have pretty similar win rates in AI4. Pretty sure the win rates are (were) similar in both AI3/AI4 because the deck would basically win if it got an early rustler and drew enough creatures, and lose if it didn't - the contents of the opposing (AI3/4) deck didn't have too much effect on things.
All in all it's a fun deck, though, and one of the faster unupped low-rare EM AI grinders I've found.
Little OT, what did you us to play silver unupped? I can't find anything with a decent winrate to get the special spin (I believe that out of a total of 200 or more attempts, I did it only once).
There isn't anything with a good special spin rate - if you want that unupped, play bronze. However, monodark and antabow both have good
score rates in silver. They both are roughly 50% win rate, which works out to a bit under one special spin per hour on average IIRC, as opposed to 2-3 special spins per hour IIRC with the same decks in bronze.