Overgrown Estate

Apocalypse's enemy-color allied-pair experiment turned a lot of cards into wedge oddities, but this one quietly fed off a resource that every deck has too much of by the late game: spare lands. Converting a flooded board into life total is the kind of effect that looks harmless until you put it next to a payoff. The cost is steady and free of mana, so the rate is purely a question of how many lands you can afford to feed it and what else cares that those lands are dying. In a graveyard-driven shell it becomes a repeatable engine: each sacrifice fuels landfall-from-the-yard recursion, retrace, dredge-style fill, or any land-leaves-the-battlefield trigger, while the three life per activation buys the turns to keep going. The Abzan color identity is what dates it; the structural idea (a sacrifice outlet that takes lands rather than creatures) has aged better than its mana symbols. Most engines tax you to convert a permanent into value. This one charges nothing but the land itself, which is why the cards built around it tend to want lands in the graveyard, not on the battlefield, and treat the life gain as the smallest part of the deal.