I'm probably dim af, but what are these used for?
Rider Spirit, etc.
For 2 main things.
1 - Souls: there are cmdr that will need 6* souls of any kind so why not use the 6* soul from these spirits.
2 - LVL Boosting: need to give an old cmdr a few lvl, why not use these spirits instead of other cmdr that may be used for event.
P.S. thats the use i can think of
Right, come to think of it, that makes a ton of sense.