Thread:BigoBurrito/@comment-27335907-20160106031632/@comment-27178622-20160121042534

Grand Gaia Chronicles are a good source, typically 4 gems per category and good spheres. Frontier Hunter is like 10 or something total. Grand Quests typically give one. Vortex has things consistently that give 1 when completing each level. Other times are spent being patient, Gumi has quite possibly the worst developmental team in the world (I'd know as I'm a developer) and when they mess up we get tickets/gems. Holiday events are also good.

It's all about patience, sometimes that may mean passing up new releases; eventually newer and better units are released so why spend what you have on something that will be replaced in 1-2 weeks. Gumi obviously has a goal of making money as any business does. What they do is exploit that by giving "deals" that look good but in reality they're horrible. They wait because people will definitely purchase something to get the unit they've desired. I'm almost positive there is code within all summoning events that increase the chance of summoning units you already have. It's a pattern really, so I wait for guaranteed summon events. there are times when the random number generator (RNGesus) is great and other times where you want to throw your device off a cliff but patience will pay off.