The collectible card game Magic: The Gathering published nine core sets from 1993–2007, also referred to as basic sets and base sets. These sets consisted entirely of reprints, usually focusing on staple cards Wizards of the Coast felt should always be available. These cards were generally simpler than cards in expansion sets, omitting multicolored cards, and all but the simplest mechanics such as Flying, Trample and Haste. As Magic grew, the base sets were considered descendants of the original Limited Edition, and shaped the default setting and feel of Magic. In contrast, Magic "expansion sets" usually chose a particular theme, such as artifacts for Antiquities. All cards were given a white border to mark them as reprints, with a few exceptions (Tenth Edition, foil cards in Seventh-Ninth Editions). From Fourth Edition in 1995 onward, a new base set would come out once per two years in the spring or early summer; for tournament play, that set would be legal for two years in the Standard format until the next core set replaced it.