The Summer Edition (code-named “Edgar”) was a set that was meant to be released in the summer of 1994. This set was made to help with the shortage of cards for Revised, as well as fix Serindib Efreet, which was printed with the wrong picture and border color.
Once the set came back from production, Wizards of the Coast decided to scrap the set.
The cards were extremely dark in color and had another card known as the Blue Hurricane printed with the incorrect color border and a corrected version of Serindib Efreet. It is believed around a pallet of Summer Edition was shipped to some card shops in Texas and overseas.
Out of all Magic: The Gathering sets created, the Summer Edition remains the rarest set ever printed with less than 50 complete sets thought to exist.