Soltari Monk (Ext, S, Block) Shadow creatures usually ended up breaking the mana curve because Wizards costed them as if shadow were a drawback, not a massively useful evasion ability
While there have still been issues with how some cards interact with older MTG rules, such as Tibalt from Kaldheim and the cascade mechanic, these have been based more on rules rather than cards themselves
Best MTG cards Swords to Plowshares (Alpha) Eternal Witness (Fifth Dawn) Mana Crypt (HarperPrism Book Promos) Teferis Protection (Commander 17) Mana Drain (Legends) Cyclonic Rift (Return to Ravnica) Paradox Engine (Aether Revolt) Crucible of Worlds (Tenth Edition) Heroic Intervention (Aether Revolt) Itd be easy to simply pick cards like the Black Lotus and call it a day, but we think thats a bit dull
Its way too expensive to be of any use really, and thats probably why its never actually going to cost you eight mana
Expect these prices to fluctuate a lot , but Im curious what the return of cards like Doubling Season and Omniscience to Standard is going to do for the price of older printings