feat(event): subscriber items 2016-03

migrations/mystery_items.js

@@ -2,7 +2,7 @@ var _id = '';
 var update = {
   $addToSet: {
     'purchased.plan.mysteryItems':{
-      $each:['head_mystery_201602','back_mystery_201602']
+      $each:['head_mystery_201603','armor_mystery_201603']
     }
   }
 };