Thespian's Stage

Commander is where Thespian's Stage earns its reputation, primarily through the Dark Depths combo — copy Dark Depths with zero ice counters, sacrifice the copy for a 20/20 Marit Lage token immediately. Outside that combo, it serves as a flexible utility land that mirrors whatever the most powerful land in play happens to be, which scales with table power. In Legacy, the Dark Depths combo is a real Lands archetype staple, and Thespian's Stage sees competitive play there. Modern and Pioneer have access to it but the Dark Depths combo isn't legal in those formats, so it sees minimal play — copying a utility land is rarely worth a colorless land slot when tempo matters. Vintage has bigger problems to solve than copying lands, so it's a fringe inclusion at best.