Alara Reborncontains 145 black-bordered cards(60 commons, 40 uncommons, 35 rares, 10 mythic rares). It is the first and so far only set in the history ofMagicthat consists entirely ofmulticoloredcards (much likeLegionsconsisting entirely of creatures).As such thenumberingof the cards is vastly different. Usually a set has all single colored cards alphabetically sorted and grouped together and inorder followed by multicolored cards in alphabetical order followed by colorless artifacts, followed by non-basic lands, followed by basic lands.
There are no lands or colorless artifacts in the set. The all multicolor gimmick was revealed when Wizards of the Coast showed off a textlessArdent Pleawithcollector number#1.So far this is the latest Standard-legal expansion release which doesn't include any planeswalker cards, withIconic Mastersbeing the latest overall. Theexpansion symbolof the set is a representation of the five convergedshards.