Foreigners are basically wannabe Avengers. Like Avengers, they’re neutral to basically everything, although they lose out on class advantage against Rulers in exchange for resistance to Berserkers. This isn’t bad in theory, and Avengers tend to be among the best Servants in the game… but sadly, Foreigners don’t get the same love, by and large. Avengers get all kinds of fantastic innate bonuses that help make up for their lack of meaningful class advantage—super high attack, an innate damage modifier, great passives, et cetera—but Foreigners are not nearly as inherently advantaged. With one key exception (which I’ll address later), nothing in Foreigners’ bases make them substantially more appealing than any other given class, so they need really amazing kits in order to let them outshine the better Extra classes or Servants with class advantage.
Sadly, Koyanskaya of Darkness does not do that. While she has quite a bit of utility within her kit, at the end of the day, she’s a DPS, and as a DPS she doesn’t do enough to outweigh being in a generally weak class. Her kit is somewhat similar to Jiang Ziya’s, actually, in that she brings enough party utility to serve as a plausibly strong semi-support… but she is weaker in two important ways: first, her support value is only notable when supporting a very small group of Servants, and second, Buster has a broader array of valuable SSR supports than Quick does, which means players are less likely to need a semi-support, and less likely to have space in a team to slot her in, even within her own niche. As such, despite her splashable buffs, she’s primarily a damage-dealer. As a damage-dealer, though, she has good-but-unremarkable buffs and some neat niche utility. In exchange for this, she has bad cooldowns, weak synergy with her best support, situational damage output, and, of course, essentially no class advantage context. She’s a situational investment at best and not even especially valuable in those cases.
|Base Atk||1,734||Base HP||2,156|
|Max Atk||11,220||Max HP||14,700|
|Grail Atk||12,282||Grail HP||16,104|
|NP per Hit (%)||0.67%|
|NP when Attacked (%)||3%|
|Star Generation per Hit||14.8%|
Koyan has enough about her that’s just sort of intrinsically strong that she avoids being out-and-out bad despite the confused and anti-synergistic nature of her kit. That said, she comes out looking no better than mediocre. She’s highly limited as a supportive unit and not even all that effective in-niche, while as a DPS she has limited Koyanskaya of Light synergy and struggles to keep up with most other AoE Buster options. She’s usable, at least, and her Van Gogh synergy props her up a little bit, but by and large she’s pretty meh. An easy skip for most players, at least gameplay-wise.
Single-Target DPS: 4/10
AoE DPS: 7/10
Offensive Utility: 6/10
Defensive Utility: 3/10
Farming Usefulness: 6/10
Casting Meteor Swarm: 10/10