Geier Reach Sanitarium

A symmetric looting engine on a colorless land, and the symmetry is both the pitch and the leash. Each player draws then discards, so it generates no raw card advantage for anyone; hand sizes stay level around the table. What it actually distributes is selection, and selection is only an edge when one player can convert the discard into something the others cannot. That places it squarely with graveyard decks: reanimator shells treat the discard as a free pitch of a fatty, flashback and madness payoffs treat it as a discount, aristocrat and spellslinger builds treat it as filtering. For everyone else it is a colorless source that occasionally helps an opponent dig out of a dead hand. Asking only two generic mana and a tap, the activation slots into nearly any deck without color commitment, which is the whole school of design it belongs to: the utility land that costs almost nothing to include because a colorless source rarely competes with a real spell, yet offers a repeatable effect that would cost a card if it lived anywhere else. The activation is gated by nothing but the tap and the two mana, so an untapper turns the trickle into a real engine: any effect that returns the land to play or untaps it lets the wheel-lite ability fire again in the same turn. The catch is baked into who benefits from the effect rather than into the cost of using it.