Study Hall

The scry payload is what separates this from a plain Command Tower with a filtering fee. Most any-color lands in the singleton format ask you to pay a generic mana for fixing and stop there; this one attaches a rider that pays off more each time your commander gets cast from the command zone. Because the scry scales with cast count, the later recasts (each already costing two more colorless than the last) dig deeper: X equals the number of times the commander has been cast from the command zone this game, so by the third or fourth trip out, a routine recast off this land banks a scry 3 or scry 4. The design logic reads as compensation. A commander that keeps dying is a commander that keeps costing more, and the scry is a small refund on that friction, letting you smooth the following draws rather than recasting into the same dead hand. The catch is that the trigger only fires when this specific land's filtered mana pays for the commander, so sequencing matters: you have to route the recast through it to bank the scry, and early, before the general has been out and back a few times, the ability is doing almost nothing. It is a land built for the long, grinding games where a commander has been killed enough times that threading your mana through a filter to get a scry 4 is worth the extra step.