The database entry for Arcum's Sleigh features a discrepancy between the rules text shown on the scanned image (taken from the image torrent) and the Original Text in the database. The image shows "2, T: Attacking this turn does not cause target creature to tap. You cannot use this ability if defending player controls no snow-covered lands." The Original Text in the database reads "2, T: Until end of turn, target creature has vigilance as long as defending player controls a snow-covered land." There's only one version of the card in the database (not counting the German version), so I'm not sure where the discrepancy could have come from. Neither of these match up with the Oracle Text, so I know that's not the source of the discrepancy.