Devoted Combo assembles an infinite mana loop with Devoted Druid and Vizier of Remedies (or similar) to chain Green Sun's Zenith and Nature's Rhythm into a game-ending Craterhoof Behemoth; Thoughtseize is premium here, letting us strip a key combo piece like Devoted Druid, Vizier of Remedies, or Tyvar before they can assemble the loop. Vexing Bauble punishes their free-cost interaction pattern less directly, but importantly it can still counter any zero-mana spells they might play and doubles as a late-game card draw outlet. Thraben Charm and Chthonian Nightmare are too slow and don't address the core combo, so they're cut for proactive disruption.