Gruul Ponza ramps with Arbor Elf and Utopia Sprawl into land destruction (Mwonvuli Acid-Moss, Thermokarst) and big threats like Annoyed Altisaur and Avenging Hunter, so Duress can strip a key land-destruction spell before it resolves, protecting your manabase. Keep the bulk of your Fog suite (Moment's Peace) and Weather the Storm as the primary plan against their eventual big attackers, trimming only redundant Tangle copies for this disruption package, and rely on your resilient card draw engine to outlast their land destruction.