Gruul Ponza wants to ramp into and resolve big threats like Annoyed Altisaur, Boarding Party cascade hits, and land-destruction sorceries, so Duress proactively strips a key ramp or land-destruction spell before it can take over the game. Troublemaker Ouphe can exile problematic permanents like Colossal Dreadmask when bargained, hitting a card that would otherwise be very hard for us to deal with in combat. Campfire, Tithing Blade, and Lembas are cut since their slow value doesn't keep pace with a deck aiming to bury us under card advantage and oversized creatures. Cast Down and Unmake remain key answers for their bigger threats since most aren't protected by hexproof or indestructibility.