Nature's RevoltutilityBudget$5.54This is the closest functional match: it also turns all lands into creatures while keeping them lands, creating a global land-animation effect.
Sylvan AwakeningutilityBudget$1.75It animates all your lands into creatures, giving a similar battlefield-wide land-creature transformation for green decks.
Jolrael, Empress of BeastsutilityBudget$0.79It can turn all lands into creatures at instant speed for a turn, serving as a more tactical version of the same land-animation plan.
Kamahl, Fist of KrosautilityBudget$2.53Its activated ability can animate all lands into 1/1 creatures, overlapping strongly with Living Plane's global land transformation role.
Karn's BastionutilityBudget$3.81While not a full board transform, it supports proliferate-based land-creature strategies in green shells that want to leverage animated permanents.
Awakening of Vitu-GhaziutilityBudget$0.27It turns one land into a very large creature and can end games in a similar land-animation deck, though not globally.
Rude AwakeningutilityBudget$0.39It can animate all lands you control into creatures, giving a broad mana-base-to-board conversion similar to Living Plane for one turn.
Mitotic SlimeutilityBudget$0.53In land-creature or sacrifice decks, it pairs with global land animation effects as a payoff, though it is not itself a transformer.