Pyroclasm sweeps their Basking Rootwalla, Wild Mongrel, and Deranged Hermit tokens for 2 damage each, though it will also kill your own small creatures so board out your own Wild Mongrel copies to avoid awkward symmetry. Their Tireless Tribe can pump toughness with discard, but early before they have cards to spare Pyroclasm still catches it. Armageddon remains excellent since it punishes their Survival of the Fittest and Gaea's Cradle engine by cutting off their mana base. Swords to Plowshares is vital against Arrogant Wurm and any Call of the Herd tokens that slip through.