What does the effect of "Boost to HC droprate" actually mean?

In Brave Frontier, what does the effect of "Boost to HC droprate" or "Boost to BC droprate" actually mean?

For example, Archangel's BB (Blessed Sword) is "3 combo Light elemental attack on a single enemy & boost to HC droprate".

Does the boost apply to JUST the hits in the bursts 3 hit's, or does it increase overall HC droprates for a period after the attack (1 turn, 2 turns, the rest of the battle)? Does it apply to every hit during the period as well? And do other units benefit from the effect or is it isolated to just the Archangel?

I haven't been able to see a any consistency because of the games natural variance for HC and BC drops and I haven't been able to tell if I'm gimping my team by using Archangel instead of a stronger unit (I don't like straight healers =p).

Any serious theorycrafting out there on how this works? The official wikia really doesn't shed any light on the topic as far as I can see.

Also, sorry this isn't tagged. There isn't a bravefrontier tag! XD

Thanks!

android brave-frontier

Best Answer

So far in playing this game for a month I've seen numerous units with the same BB or related. I think it works like this:

It increases overall HC droprates for a period after the attack (1 turn, 2 turns, the rest of the battle). It also applies to every hit during the period. Other units do not benefit from the effect because Archangel's BB is an Offense type. Only Support types (like Melchio) can boost other units with their BB. I have no idea how much percentage is added for each boost. But I think it depends on the units level and the BB level of the unit.