'Genshin Impact' Guide: Best Builds For Support Diona KEY POINTS She can use either the Favonius Warbow or the Sacrificial Bow Noblesse Oblige is her best artifact set, but the other support sets can also be used to good effect Among “Genshin Impact’s” current pool of characters, Diona is arguably one of the best for recharging a party’s energy while also keeping them alive with powerful heals and indestructible shields. She does need a fair bit of investment to get her to sustain energy recharge rates to absurd amounts, but even a Diona with low weapon and artifact investment can provide a substantial advantage to any party composition.