The buyer still has to provide a card of the same rarity they either dont want or need, while the seller receives a card they can resell, repeating the process infinitely
Valakut, the Molten Pinnacle Mono-red decks can get Valakut, the Molten Pinnacle up and running without much trouble, though multicolor decks are going to need Prismatic Omen or some similar effect to make this happen regularly
The secret to Guays appeal lay in the ethereal nature of her compositions, and the way in which they centred both female characters and femininity, things that were rare in Magic art, and fantasy art in general, at the time
Whites section of the color pie has seemed to shrink a bit over the years, and is cluttered with mechanics like lifegain which struggle to hold value at a competitive level
That might sound like a lot of protection, but think of it like this: If your deck is completely shut off when the commander or a similarly critical piece isnt in play, your opponents can beat you with a Swords to Plowshares or two