mtg exile cards from the top of your library until Zhulodok, Void Gorger (Commander Masters) Exile our opponents libraries for

Coma Veil will keep a creature tapped down, but it doesnt actually tap the creature on the front end

Play Boosters are great for Limited play and fun to open, with a possibility of multiple Rares and at least 1 shining foil in every pack

Once Brotherhood Spy's ability has resolved, removing the legendary Assassin (or Assassins) you control from the battlefield or causing them to lose the legendary supertype or Assassin subtype won't cause Brotherhood Spy's ability to stop applying for that turn

Aside from the usual go-wide plan, goblins can also lean into a sacrifice-heavy strategy, especially in red and black