If you attack with two copies of Werewolf Pack Leader, each of their abilities trigger and you get to draw two cards from a single attack
Normally, development gets rid of the stuff that ends up at the bottom, but I always come in saying, "Don't kill this one." I give my little speech about how we need our Johnny build-around-me rares and I have enough clout that I'm usually able to save them
However, this one in particular is a cut above the rest because Kircai points out a few alternatives which give it a degree of redundancy
I have a similar deck, and here's some things I would suggest adding: Dimir Infiltrator/Drift of Phantasms/Dimir House Guard: These guys can all be discarded in order to get important cards to your game plan
In fact, this junk can be a great way to access extra cards
Shining Shoal and Ugins Conjurant are especially useful since they can be customized to snipe the exact cost we need