Gleaming Bastion

Older tapped duals charged you a tempo tax up front; the pain-lands charged you life every time they made a color. This design moves the toll to the back end and hands it only to the greedy. The land arrives untapped and produces white or blue the turn it lands, then that colored mode goes conditional afterward, unlocking again only when you can point to a basic land in play. The clause does the sorting: a disciplined two-color base with real basics never notices the restriction, while the five-color pile stacking these on top of each other finds half of them producing only colorless by the midgame. That is the tension the whole line is built to resolve, and it resolves cleanly by keying off entry timing and basic-land count rather than checking specific land types the way the check-land template does. The colorless mode is the floor that keeps it from ever being a dead draw: even when every color condition fails, it still taps for , so the worst case is a slightly awkward Wastes rather than a land you cannot use. It rewards honest manabases and quietly penalizes the deck that ran too many fixers with too few basics to feed them, self-correcting the greed at the exact point where greed usually gets punished anyway.