Expansion symbol
The expansion symbol is a small icon found on the right side of the middle line on a Magic card. Each expansion symbol is unique to a particular set, identifying a card as belonging to that set. Every expansion and all Core Sets since Sixth Edition have used expansion symbols.
Expansion symbols were black-and-white through the Stronghold expansion. Since the Exodus expansion, expansion symbols have incorporated colors to identify the rarity of each card: common cards have black symbols, uncommon cards have silver or black-to-white fade symbols, and rare cards have gold symbols. A fourth expansion symbol color, purple, was introduced in Time Spiral to represent the 121 bonus Timeshifted cards in the set.
The Chronicles expansion consists entirely of white-bordered reprints. It is unusual because it does not have its own expansion symbol and instead uses the expansion symbols of the cards' home expansions.
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