Tap Shoes

simple concept. i took the idea from an article by abe sargent about building with bad rares from star city games. i decided it was a pretty cool idea and went about making a type i deck based around the lodestone myr static orb howling mine synergy. a few cards that i intend to add are: 1 time vault 2 the abyss that is, once i get my hands on them. the all is dust are pretty efficient board removal in matches, and the mana cost isnt too bad with how the deck generates mana, generally speaking. im curious as to whether or not the abyss should outright replace the icy manipulators or if there happens to be another equivalent that would work well in this deck. the manipulators can be a bit slow at times. im also open to any and all sideboard suggestions. i have a playset of stifle and some nice other control options. any thoughts?