In exchange for the hefty cost, "Lady's" immediately brings out any small Maid from the Deck and allows you to Fusion Summon essentially for free during each Standby Phase, by using monsters on your field OR banished cards and returning them to the Deck, lending herself to a very grindy playstyle of reusing the same resources over and over
What's more: Some of the most powerful cards printed in Alpha are artifacts, including six of the Power Nine spells, and Commander's most widely used card, Sol Ring
These enter the battlefield untapped and allow you to tap, sacrifice and pay 1 life (at instant speed) to search your library for a land card with the one of the two land types written on them
On top of that, theres a chance that these cards can be The Brothers War Commander cards, Jumpstart Booster rares, Transformers cards, or retro artifacts and retro schematics the latter two are quite eye-catching