The problem, of course, is that the Encyclopedia is keyed by a five-digit number that Wizards tended to assign somewhat randomly. (The order actually made some sense from Alpha through Tempest, but thereafter it became incredibly erratic.) In order to create patches for the Encyclopedia that are mutually compatible, we must all settle on a common methodology for assigning key values to new cards, starting with Onslaught.

Prior to Onslaught, the highest number assigned was #37120 (the Centaur Rootcaster from Judgment). This card image appeared in the directory "37xxx", since the directories are defined by the first two digits of the key. We propose that each set start with a new directory, and that we assign numbers to cards in the order of the Card Numbers in the Wizards spoilers. Thus, Onslaught will use #38001 - #38350, and the Riptide Replicator will be #38309. The next set, Legions, will use #39001 - #39143.