Gruul Ramp wants to accelerate into large threats using Arbor Elf, Wild Growth, and Utopia Sprawl, so Spreading Seas both denies a key land's mana and disrupts their ramp plan while replacing itself. Annul is a real answer here since Wild Growth and Utopia Sprawl are enchantment spells it can counter outright, denying their acceleration before it starts. Brinebarrow Intruder's -2/-0 and Cryoshatter's -5/-0 struggle to matter against creatures like Jewel Thief, Primordial Pachyderm, and Avenging Hunter that are already large or gain value on entry, so they're cut for proactive land and mana disruption. Prioritize countering their biggest threats like Boarding Party and Avenging Hunter with Counterspell, since letting them resolve big spells is what loses this matchup.