Beyond the Chrysalis tops the weapon ranking for Vesna, at 124.72% relative damage at R1 in the Vodyanitsa Sustain - Team column, ahead of Whitelake Frostfeather, New Bough and Primordial Jade Cutter. That order is prydwen.gg's, measured in play and rephrased here; every row of it sits under Weapons below.
Run Scarlet Proof on Vesna, with Gilded Dreams and 2PC ATK% Combinations behind it. Main stats are ATK% sands, ATK% goblet, CRIT Rate / CRIT DMG circlet. Roll substats in the order CRIT Rate = CRIT DMG > ATK% > EM > ER.
Talent priority is Skill >> Burst. The Elemental Burst costs 60 energy, which is what an Energy Recharge target has to clear.
Aim for 117% to 128% Energy Recharge, depending on the team and the weapon; in teams that would need more, prydwen.gg's calcs say to skip ER and Burst every other rotation. The standard rotation (Simple Combo) is E EE Q/N3C E 2[N3C E].
The strongest team is Vesna, Odette, Vodyanitsa and Sucrose, built around Vesna: Anemo · Stellar Swirl.