[Snake]

Aaaaaaa.

Too many words. (Not that I ain't reading, and I can bet a certain developer will be skimming if we don't put TL;DRs)

Anyway, Destiny Summoner is a bad choice no matter how much you look at it, but Youkai being glass nukes will always 'justify' whatever argument anybody has against buffs or blocking nerf attempts.

Fast Offense gives any Youkai the possibility to inflict over (260% X Elemental ATK magic damage) * 2, and you can amplify that for each Youkai over the first one spawned. That multiplies the damage by like, 2 then 4, then 6, then 8. (Literally, if we take all numbers it will do over 2080% X Elemental ATK magic damage. What in the five hells can survive this?)

And can anybody say that is okay? Not even an Evoker can do this much magic damage for no momentum.

This was okay but only pre-GR, when Youkai were actually both 'tanky' and had decent damage instead of, as how it stands right now, paper and insane damage. Sadly, this is not a thread to talk about Youkai, but Fast Offense.

So TL;DR: Limiting it to Bonded Youkai only may mitigate some of this overkilling nuisance, and seems to be more agreeable after Spo's input. There's no need to make the buff get depleted, especially due to option A, when it may only work with Bonded Youkai.
(So option A is what I'm digging for, now)

But it will not solve the problem with Youkai. They really need their magic damage to go down, and VIT/DEF/RES to go up, so we can have more fun things (or maybe a new class?) instead of this 'youkai lol 2080% damage' trend.