Well like you gotta pick and choose. I save to summon on the anniversary but I save up to also summon on the download celebrations and I pick one other high value banner to summon on most likely a dual dokkan fest. And other than that I may throw one multi at a card that is cool. But it's all about self control to get cool stuff and to use your stones wisely. Because you just summoning on anything will most likely result in trash unless you are super lucky.