We have seen this design before in cards like Noyan Dar, Roil Shaper and Obuun, Mul Daya Ancestor
Hexing Squelcher is the kind of pickup that will enhance a cEDH deck or potentially a burn or Goblins deck in a 1v1 format
To introduce the Set Booster to you, I'm going to walk you through the booster one slot at a time just as you would experience it as you open it
Likewise with Secret Lairs
Generally, no spell costs more than two mana (again, Skewer the Critics and Rift Bolt can be hard cast for more, but more often than not only cost you one mana), letting you keep the curve exceptionally low, and leading you to only run around 20 lands
If you like Goblins, try out Swarming Goblins that gives you the chance to put between one to three Goblins onto the battlefield over and above the 4/3 creature you get to start with