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While a card like Skeleton Ship being bought out and jumping in price doesn't matter to tournament players or even most Commander players, it matters a lot to the poor soul trying to build a Skeleton tribal deck, and part of what makes Commander such a magical format is that you can build a deck like Skeleton Tribal

Sword of Forge and Frontier Sword of Forge and Frontier can access two extra cards from the top of your library each time you hit an opponent

Treachery (Steal) 21

The original Reserved List left Wizards an out thanks to the foil loophole

White is the color that stands to benefit from this the most, considering its lifegain abilities and generally weaker options for card draw