But Urborg is different it's not itself a Swamp, it only has the word "Swamp" in its text description, which the official Commander rules point out is okay: Basic land words (swamp, forest, etc) in the text box of a card do NOT represent a coloured mana symbol
Misprints or cards lacking the full date should raise a red flag about authenticity
[45] The physical format was not well-received by the players due to a "shortage of preconstructed decks" and the resale price of individual cards
The new cards in the deck matter, too
Here, you can get a one-side sweeper for small creatures or create a copy of a strong elemental, but the default modes of drawing two cards or creating two Treasures are always useful
If these aspects are not done well I will likely want to avoid them