From what people are saying:
Dark unit is nice for some crazy antics with Bestie.
Light unit is arguably better than Rivera.
Thunder unit might be a better Raaga? Problem is "Increased BC Drop rate" is nearly obsolete due to the insane amount of resistance everything seems to have nowadays.
I might toss some gems at the batch just to see what I get since it's a "3 Gem per" event.
EDIT:
Reed GGC released today in Japan. Nevsky introduces a new (de)buff mechanic (It's an enemy buff) that essentially makes your entire team produce ZERO BC for the duration of the effect.
Dark unit is nice for some crazy antics with Bestie.
Light unit is arguably better than Rivera.
Thunder unit might be a better Raaga? Problem is "Increased BC Drop rate" is nearly obsolete due to the insane amount of resistance everything seems to have nowadays.
I might toss some gems at the batch just to see what I get since it's a "3 Gem per" event.
EDIT:
Reed GGC released today in Japan. Nevsky introduces a new (de)buff mechanic (It's an enemy buff) that essentially makes your entire team produce ZERO BC for the duration of the effect.