No, Furina's primary damage buffs, specifically her Fanfare effect from her Elemental Burst, do not directly affect Swirl damage. Swirl is classified as a Transformative Reaction in Genshin Impact, and these types of reactions scale primarily with Elemental Mastery (EM) and character level, rather than benefiting from percentage-based damage bonuses to a character's overall damage or specific elemental damage.
Understanding Furina's Damage Buffs
Furina's kit revolves around her Elemental Burst, "Let the People Rejoice," which generates stacks of "Fanfare" based on changes in party members' HP. These Fanfare stacks provide a significant DMG Bonus to all party members.
- How Furina's Buff Works: Furina's Fanfare offers a powerful increase to the personal damage of characters, as well as to Additive/Multiplicative Reactions like Vaporize and Melt. This means that if a character deals 10,000 damage with an ability, and Furina's buff provides a 50% DMG Bonus, that ability's damage would increase to 15,000.
- What it Affects: Her buff directly enhances:
- Normal, Charged, Plunging Attack damage
- Elemental Skill damage
- Elemental Burst damage
- Vaporize and Melt reactions (which scale off the base damage of the hit that triggers them)
Why Transformative Reactions Are Different
Transformative Reactions, such as Swirl, Bloom, Hyperbloom, Burgeon, Electro-Charged, and Burning, function differently from Additive/Multiplicative Reactions. Their damage is calculated independently of the triggering attack's damage and scales primarily with:
- Elemental Mastery (EM): Higher EM significantly increases the damage of these reactions.
- Character Level: Higher character level also contributes to their base damage.
- Enemy Resistance: Enemy resistances to the specific elemental damage type (e.g., Anemo resistance for Swirl).
Since these reactions do not derive their damage from the initial hit's multipliers or the character's general damage bonus, Furina's Fanfare buff, which increases a character's DMG Bonus, does not apply to them. The damage from a Swirl reaction is a flat amount determined by EM, level, and resistance, not by the initial damage that triggered it.
Practical Implications for Team Building
When building a team with Furina, it's important to consider which characters and reactions will benefit most from her significant DMG Bonus.
- Characters who benefit greatly:
- Main DPS characters whose abilities deal high instances of personal damage (e.g., Neuvillette, Alhaitham, Ayaka).
- Characters that trigger Vaporize or Melt frequently (e.g., Hu Tao, Lyney, Wriothesley).
- Characters who don't scale well with Furina's direct buffs for their reaction damage:
- EM-focused Anemo characters primarily aimed at maximizing Swirl damage (e.g., Sucrose, Kazuha, Venti built for full EM). While Furina can enable them to deal more personal Anemo damage (if built for that) or benefit from their buffs, her own damage bonus won't boost their Swirl numbers.
- Characters focused on Bloom, Hyperbloom, or Burgeon reactions (e.g., Nahida, Nilou, Kuki Shinobu built for EM).
While Furina might not directly buff Swirl damage, she can still be an incredible asset in teams by enabling powerful Hydro application for other reactions, facilitating powerful self-healing, and significantly boosting the personal damage of the primary damage dealers in the team.
