Collector's Vault

Looting normally maintains hand parity: you draw one and discard one, ending even in cards but ahead in selection. What sets this rock apart is that every filtering pass also mints a Treasure, so the card that was merely trading up in quality is now generating a permanent alongside it. That Treasure is the whole pitch: it either buys you a mana of any color the following turn or thickens an artifact count, turning a colorless selection engine into a slow ramp-and-fixing piece that never demands a warped mana base. The two-mana activation is the discipline that keeps it from spiraling: each use is a real mana investment, so the Treasure reads as payment for committing that mana rather than a free rider, and you cannot chain the ability every turn without bleeding tempo. The tap-plus-two structure carries no timing restriction, so nothing stops you from holding the mana open and looting on an opponent's end step, then arriving at your turn with a fresh card and a Treasure banked. It sits across two lines of design that rarely share a card: graveyard decks that want to bin a specific spell and artifact-Treasure decks that count permanents. Being colorless lets either run it, and the Treasure means neither pays the usual selection tax in board presence to do the sifting.