Thank you for bumping!! Take the following with a grain of salt. I am a casual player, but I play a lot of paper pauper against my buddies, and we netdeck about half the time, so our pauper meta is pretty competitive.
skyblinder staff is pretty cool, but expensive and not as strong with delver of secrets, a strong component of your mirror, across the table
White weenies usually uses bonesplitter in a similar capacity and the equip is friendlier.
A good place to get "current pauper metagame" is http://www.mtggoldfish.com/metagame/pauper. It's the online meta, and online is a bit different than being able to bluff out a live opponent so the card choices are a bit different.
One other comment I have is your use of evolving wilds and it's ilk. That really slows down your deck. I know that theoretically it thins it and that's all well and good in a more traditional format, but pauper is fast. Like turn 4 fast, and almost every deck is some aggro variant. Fetch lands are strictly worse than a basic land in this format, unless you need 3-4 colors, and that's, more often than not, suicide. Guildgates are even a risk, in my opinion. That being said, there are some grindy decks in pauper, and you're suited to shut down the fast decks like Green Stompy, and Wee Fiend, because of your creature removal.