13x lands that can produce white or black 1x land that can enter as either white or black (Brightclimb Pathway // Grimclimb Pathway) 9x lands that produce black mana One of them being Urborg, Tomb of Yawgmoth, which will make all lands on the battlefield a swamp, in addition to their other types Two of them being MDFC cards (Hagra Mauling // Hagra Broodpit and Agadeems Awakening // Agadeem, the Undercrypt) 6x lands that product white mana 5x utility lands For utility lands, there is the Dark Depths / Thespians Stage combo mentioned previously
VEXING BAUBLE To be fair, this card is a meta call
Chaos, the Endless | Illustration by Billy Christian MTG sets these days are a big deal
Similarly, if The Soul Stone is already harnessed and becomes a copy of something else, it stays harnessed, though it's very likely that won't be relevant until that copy effect ends
Borderless dual lands Found in Set, Draft, and Collector Boosters, borderless dual lands bring the surreal dark beauty of Phyrexian landscapes to life