A mana base can be simple (say, seventeen Plains in an all-white, 40-card deck) or it can be quite complex: featuring multiple colors of mana, lands with unusual abilities, and indirect methods of making mana (via artifacts, creatures, or spells)
With four mana you can save Arcanis from removal and recast it, which made for a good control finisher some 20 years ago
(2024-06-07) If the target land isn't destroyed by White Orchid Phantom's last ability (perhaps because the land has indestructible), its controller still gets to search for a basic land card
Summon: Primal Odin Speaking of win conditions, Summon: Primal Odin can be a black wincon as well
However, Im here to talk about the more fair uses of the MDFCs
If you have experience with some or all of these cards it might not seem groundbreaking, but for some players might benefit from added direction