The boxes with numbers on the end are the ones which have the creatures all at Level 100. You won't be using these too often, but there may be certain circumstances where you'll want to. (Like for a tournament draft or something.) It's also nice to have them on hand so you can use them against strangers on P-O just for fun. The boxes with letters of the alphabet on the end have all the creatures at their CC-adjusted levels. These are the monsters you will want to use when fighting others in UPN CC battles. Feel free to rename the boxes however you like. However, I will be sticking to this naming convention for now. Numbers for level 100s, letters for level adjusteds. - Talon, March 17, 2012