Gruul Ramp is a mirror-style matchup built around the same ramp-into-big-threats plan, so Weather the Storm's life gain helps you survive their Primordial Pachyderm and Avenging Hunter beats while you set up your own cascade payoffs. Pulse of Murasa gains 6 life and can rebuy a key creature or land lost to combat or land destruction, giving you an edge in the long grind. Trim some Wild Growth since both decks ramp similarly and the game often comes down to who lands the bigger threat first, and Structural Distortion is weak here since they have few artifacts or lands worth exiling over just racing. Keep Thermokarst and Mwonvuli Acid-Moss since land disruption is symmetrical value in the mirror, slowing them down while accelerating you.