I've been wondering about this for the longest time, but the question popped back in my head after reliving how Chloe decimated her family (Prisma! Ver.) in what a looks like a surprising NP loop (her Art cards kept popping up).
So, does increased Arts damage have anything to do with NP gain? If it is, will the most optimal CE for Chloe after this event be Formal Craft?
Yep any arts boosting ce or skills will also increase the amount of np you gain this is why for most np spamming teams it better to run tamamo and waver instead of just double waver since that extra %50 arts increase boosts there np gain by %50. This doesn't only apply to arts boosts either like if you use a quick boosts and then use a quick card more crit stars will be generated, but all buster up does is increase the damage even more.
yup. in other words the "attack type" boosting CEs and skills boost literally every aspect of their respective type. a little something to consider when comparing simple attack boosts or regen boosts to their respective attack type boosts.
Formal Craft is what I would use, if I had that option. But I can't have Formal Craft tastes when I'm on a Kaleid Sapphire budget.
Yes, that is correct. That is reason why normally attack-up < Art/Quick-up, because Attack up affect attacking status but Quick/Art-up also affect internal factors such as NP gain and Star generation. One simple testing you can try Arturia's single NP with or without her 1st skill and Tamamo's third skill as comparison. Or maybe even use attack-up CE rather than art-up CE
Quick-up skill/NP effect also boost NP gain and star generation for a quick card. Although Quick car's NP gain won't be comparable with Art card. This is reason why Skadi's coming just bring shinning to quick orientated servants, since some servant's quick NP with decent hit account can spam NP like Arthuria?Surfo-Mo + Tamamo but under Skadi's quick boost, as well as bring large amount of stars for second round of critical attack. Some AOE quick NP servants like Lancelot, Monte Cristo etc, could be extremely beneficial. Even some ST quick NP servant can also be great in paired with dual Skadi, like Maid Alter, Kintoki, OKita, etc.
A specific example is illustrated in this picture. (If the picture is not successful upload, the site is https://www.bilibili.com/video/av19092638?t=147)
So you can see Atlante as one typical servant with poor NP gain is able to spam her NP due to dual NP gain up skill from her + Nero Bride's 2nd skill and MLB Magical Girl of Sapphire CE (yeah, that is our current event CE), but the most important thing is dual Shishou's 100% quick-up and herself LV9 46% quick-up for her first NP releasing. Then after these quick-up effect's vanishing, Atlante's second NP release won't bring such NP gain as her first NP, even though her ~120% NP up overall was still presented.
This is also a reason why some players like me are chasing for some max bond CE. One max bond CE may only bring like +15% Art or Quick or Buster up to a team, maybe not noticeable, but what about three servants all with their bond CEs?
