BRG has some enters-the-battlefield value in Biotech Specialist, The Sackville-Bagginses, Wolverine, and the enter trigger on Rottenmouth Viper, so Torpor Orb shuts those off and weakens their grind. It does nothing against dies triggers like Greedy Freebooter or Callous Inspector, or against Viper's attack trigger. Duress proactively strips their removal spells like Requiting Hex or Stir Up Trouble before they can be used against our threats. Consult the Star Charts and Firebending Lesson are too passive against their aggressive curve of efficient creatures, so they come out for more targeted disruption.