Six from Modern Horizons 3 gives green decks a graveyard-centric value engine, turning lands into recurring resources. Its attack trigger mills cards and recoups lands, fuelling landfall and recursion strategies. The retrace-style ability on nonland permanents in your graveyard offers long-game inevitability if left unchecked. Although still relatively new, it has drawn attention from Modern brewers who enjoy grindy, engine-based green decks.