User blog comment:Hayashi H/Max-efficiency Map-clear Formations/@comment-91.112.8.18-20160324141946/@comment-26344264-20160326232501

it is, you don't always have time during events for extensive sparkling, but it helps with hard maps. I used a lot of them in last summer event for the last map and since I don't buy them I get them from quests and the 6-1 quest isn't that hard for me.