During chain attacks there is a damage multiplier which increases how much damage attack arts do to an enemy. Does this damage bonus multiplier apply to healing arts?
Based on some testing while fighting regular and elite monsters, the "Chain Boost" does indeed affect healing arts. However, the boost is calculated differently with healing arts, resulting in only a few hundred points difference rather than thousands with combat arts.
Below is an image while fighting a standard monster (I'm currently controlling Mio as a Tactician). By using the AOE Healing Art "Stormy Skies", my units were healed anywhere between 573 and 5911 points of HP.
Below are two screenshots while also using Mio as a Tactician, and using "Stormy Skies" while doing a Chain Attack. The first screenshot has a 300% boost and the second screenshot has a 543% boost. The difference in healing between the 300% and 543% boost is negligible2, and "Stormy Skies" did in fact heal an additional ~150 HP during the chain attack.
1 This number was the same while fighting a standard monster and elite monster, this was just the image I uploaded
2 Again, this is probably due to how it calculated differently than combat arts. I plan on testing around with higher damage boosts to see how much this gets affected.
Maybe chain attacks give a buff to healing unrelated to the damage bonus percentage? Sep 8, 2022 at 14:05
@Stevoisiak Quite possible. If that is true, then it's probably a hidden modifier Sep 8, 2022 at 14:48