From King's Raid Wiki
Purchasing these will give a Exp +1% and Gold +2% bonus effects.
Heroes wearing this costume will gain appropriately Christmas-y particle effect that will appear every time they cast a skill.
|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|