Genshin Impact Diona Support Build: Best Weapons and Artifacts

To build Diona as a defensive support in Genshin Impact, prioritize Maximum HP and Energy Recharge to maximize her shield durability, healing output, and Elemental Burst uptime. Equipping utility bows like Sacrificial Bow alongside supportive artifact sets turns her into a reliable defensive anchor who provides shields, sustained healing, Cryo particle generation, and team buffs.

Best Weapons for Support Diona

Diona deals minimal personal damage, so her weapon choice should focus entirely on resetting her skill cooldown or fueling team energy.

Weapon	Main Substat	Support Benefit	Best Use Case
Sacrificial Bow	Energy Recharge	Chance to instantly reset Elemental Skill cooldown on hit	Premier choice; holding her Skill fires five paws, giving five separate chances to trigger the reset.
Favonius Warbow	Energy Recharge	Generates universal neutral particles on landing a CRIT hit	Best for teams with heavy energy costs; requires 30% to 40% CRIT Rate from artifacts to proc reliably.
Recurve Bow	HP%	Grants direct HP% to scale shield strength and healing	Budget 3-star option when Energy Recharge thresholds are met through artifacts alone.

Sacrificial Bow is Diona’s most reliable weapon. Holding her Elemental Skill releases five separate Icy Paws, and each projectile independently rolls the chance to reset her skill cooldown. This allows you to immediately reapply a broken shield or produce a second batch of Cryo particles.

Artifact Set Options

Diona’s artifact set should reflect whether your team carry benefits from offensive attack buffs or raw defensive cushioning:

4-Piece Noblesse Oblige: The standard support choice. Casting her Elemental Burst, Signature Mix, increases all party members' ATK by 20% for 12 seconds.
4-Piece Song of Days Past: A competitive alternative for teams led by carries who do not scale with ATK (such as HP- or DEF-scaling damage dealers), converting healing ticks into flat damage bonuses.
2-Piece Tenacity of the Millelith + 2-Piece Vourukasha’s Glow: Grants a combined 40% HP bonus. This maximizes the raw absorption of her shield and increases base healing ticks against aggressive enemies.

Stat Benchmarks and Priorities

Diona needs enough Energy Recharge to consistently cycle her 80-cost Elemental Burst, followed by as much HP as possible to reinforce her shield absorption and healing ticks.

Recommended Energy Recharge Benchmarks

With Sacrificial Bow: 180% to 220% Energy Recharge.
With Favonius Warbow: Up to 200% Energy Recharge, plus 30% to 40% CRIT Rate.

Main Stats and Substat Order

Sands of Eon: Energy Recharge or HP%
Goblet of Eonothem: HP%
Circlet of Logos: HP% or Healing Bonus (or CRIT Rate if using Favonius Warbow)
Substat Priority: Energy Recharge (until reaching the target benchmark) > HP% > Flat HP > CRIT Rate (only for Favonius Warbow).

Combat Execution and Skill Usage

To get the full value from Diona's kit, always hold-cast her Elemental Skill rather than tapping it:

Hold Elemental Skill (Icy Paws): Fires five paws, creating a shield with a 75% damage absorption bonus that lasts approximately 12 seconds while generating four Cryo particles. Tapping the skill fires only two paws, yielding a weaker shield with shorter duration.
Deploy Elemental Burst (Signature Mix): Creates a stationary field lasting 12 seconds that ticks Cryo damage and heals active characters standing inside every two seconds. Place this field close to enemy targets so your carry can attack and receive healing simultaneously.

Notable Constellation Milestones

Constellation 1: Regenerates 15 Energy for Diona when Signature Mix ends, lowering her functional burst cost from 80 to 65 and easing artifact Energy Recharge requirements.
Constellation 2: Increases Icy Paws damage and shield absorption by 15%, while granting temporary shields to nearby allies in co-op mode.
Constellation 6: Provides strong conditional buffs inside her burst field. Active characters at or below 50% HP gain a 30% Incoming Healing Bonus, while characters above 50% HP gain 200 Elemental Mastery, significantly increasing reaction-based team damage.