Bitter Revelation
The trade is the whole engine: you see four cards, keep the best two, and the other two go straight from the library to the graveyard. That last clause is the one that matters. This is not a simple dig-and-draw, because the cards you leave behind are not shuffled away or bottomed, they are loaded into the bin, which makes the spell perform card selection on the front half and graveyard stocking on the back half in a single cast. For decks that mine the yard (delve costs, escape fuel, recursion targets), the two cards binned can be worth as much as the two taken. The two life is the meter on the engine: black has always paid in life for raw card advantage, and four mana for two real cards plus two graveyard cards plus a fixed life payment sits squarely in that lineage. Being a sorcery caps the trickery: no end-step draw-go, no holding it up as a bluff, just a main-phase smoothing spell you cast when you have a turn to spare. The design occupies a quiet but durable niche, a digging spell whose self-mill is deliberately a benefit rather than a cost, built for the kind of black midrange and graveyard decks that treat the bin as a second hand.
