We will always list the cheapest version of the card (and on some occassions the price for a copy in good condition)
Artifacts like Urzas Sylex, Nevinyrrals Disk, or Oblivion Stone warp opponents playstyles around the threat of mutually assured destruction and certainly have their place in Commander, and in the case of Sylex, tossing an extra two mana during activation to Call the Gatewatch might be just what you need to break parity following extinction
Because a lot of these cards have such a big price memory, they aren't likely to headline new sets anyways
Now, the full scope of the story of the actual Brothers War forms the backbone of early Magic lore and is a rather expansive tragedy with lots of moving parts
Due to their low print run, box sets are extremely scarce, especially those still in the original sealed state
Rarity : Common Cost : U Colour Identity : Blue Usage : Provides low cost card draw and lets you set up your top of library