User blog comment:Linathan/Unit Spotlight: Courageous Heart Alma/@comment-218.186.88.97-20150325120140/@comment-25710007-20150326012431

...well, the availability for each of the units are basically the same. Although Alma is a free unit, her dungeon only comes out in a long while. When she'll come back is a mystery, so as of now, it's either you have her, or you don't.

The only batch that has the upper hand is probably Zegar's, since they can be aquired through Honor Summon, Quest, and Rare Summon.

The worst is most likely Reed's batch, since they only came out once.

Again, just saying.