Gruul Ponza plans to disrupt our mana while deploying large threats like Annoyed Altisaur, Avenging Hunter, and Writhing Chrysalis, none of which we can profitably block or race in combat once they land. Journey to Nowhere is our cleanest way to permanently deal with these big bodies regardless of size, and since we can't easily out-race their land destruction plan (Mwonvuli Acid-Moss, Thermokarst) into a grindy game, having hard removal is more valuable than a combat trick. We keep our aggressive low curve intact to punish their land destruction by pressuring their life total before they stabilize with ramp.