Mine Excavation
Most artifact-and-enchantment recursion sits in green or white at a fixed, single-target rate; this one bolts a scaling clause onto the front. Conspire lets you tap two white creatures as you cast it to copy the spell and aim the copy somewhere new, so a board with the right bodies buys back two permanents from the yard for the same you would otherwise spend retrieving one. The trick lives in the targeting: the second target is chosen on the copy, not the original, which is what makes the doubled mode a genuine upgrade rather than redundancy. The constraint is honest about its price. Conspire demands creatures sharing the spell's color, untapped and available, so the upgrade only comes online once you have committed a white board that would rather be attacking. Cast it on an empty battlefield and you get a plain single-target regrowth effect at a worse rate than the dedicated staples. That conditional ceiling is the exact bargain conspire was built to offer across its color cycle: a baseline anyone can cast at face value, with a tap-cost premium that rewards decks already running wide. What sets this one apart from the rest of the conspire suite is the breadth of what it returns, pulling artifacts and enchantments alike from any graveyard, which keeps it a flexible answer-to-the-answer in slower white shells long after the creatures that doubled it have fallen off the board.
