Sprightly Vonwacq
Sprightly Vonwacq is a relic set in Honkai: Star Rail with the following effects:
Boosts Energy Regeneration and, once SPD hits 120+, Advances Forward the wearer's action by 40% right at battle start, making it a premier pick for high-SPD DPS units that want to act first and open with skills or ultimates immediately.
Increases the wearer's Energy Regeneration Rate by 5%. When the wearer's SPD reaches 120 or higher, the wearer's action is Advanced Forward by 40% immediately upon entering battle.
The block below gathers main-stat recommendations by character ROLE (not tied to one character) — most EN aggregator sites push this to a separate build page; here it sits right on the set page.
Elemental DPS: Elemental DMG Boost matching the character's type. Support/healer: HP% or ATK%.
ATK% or Break Effect for DPS/break-focused roles; Energy Regen if the character needs frequent ultimates.
Same general substat priority as Cavern sets: CRIT Rate > CRIT DMG > ATK% — except break-focused roles, where Break Effect comes first.
How to read this relic set page
Cavern Relics have 4 pieces: Head and Hand always carry fixed flat stats (HP and ATK), so only Body and Feet have a random main-stat you actually choose. The 2-piece effect unlocks with 2 out of 4 pieces from the same set; the 4-piece effect is stronger but needs all 4 and usually has its own trigger condition — read the exact text above before committing. Planar Ornaments only have 2 pieces (Planar Sphere + Link Rope) and only ever have one 2-piece effect, there is no 4-piece version.
The two types also differ in where you get them: Cavern Relics drop from the Cavern of Corrosion and cost Trailblaze Power per run; Planar Ornaments come from the Simulated Universe or Divergent Universe, which do NOT cost Trailblaze Power — you trade for them with items or completion rewards instead. A full loadout usually combines one 4-piece Cavern set (or two different Cavern sets at 2 pieces each) with one 2-piece Planar set — go 4-piece when that set gives a large, reliable damage buff, and mix 2+2 when you need to stack several smaller stats (e.g. ATK% from one set plus Elemental DMG% from another).
The "who should use this" list is pulled from cross-sourced build consensus and updates automatically as the meta shifts, it is not hand-picked. See the full set table on the Relics page, or check terms in the HSR Glossary.