From King's Raid Wiki
These costumes were made available for purchase in the Special Shop after the 6th December 2018 patch and 20th December 2018 patch. These costumes give a 4% EXP boost and a 2% gold boost.
|Special Shop||School Season, Beach Party, Trick or Treat, Super Star, Merry X-Mas, World Fair, Frozen Fantasy, Academic Flair, Wedding March, Summer Tide, Tender Embrace, Devoted Servant, Yuletide Carols, Witching Hour, Culture Ensemble|
|Event Costumes||Darkness Costume, Sub Story, League of Honor|