Diona

Diona

★★★★
Cryo
Bow
Off-Field
Survivability
Builds Update5.5
Teams Update5.5
As a support, Diona's typically used for three things; Shielding, Healing, and Cryo particle generation. Pairing Diona with Cryo damage dealers such as Ayaka, Ganyu and Eula allows you to funnel energy into them while providing them a shield. Weapons such as Sacrificial Bow and Favonius Warbow greatly increase her potential as a battery.

Best Artifacts

(2) Elemental Burst DMG +20%
(4) Using an Elemental Burst increases all party members' ATK by 20% for 12s. This effect cannot stack.
This set provides an teamwide ATK% buff while also increasing burst damage - Diona does not have the best uptime on this set, however, she may be the best option to use this set.
(2) When a nearby party member triggers a Nightsoul Burst, the equipping character regenerates 6 Elemental Energy.
(4) After the equipping character triggers a reaction related to their Elemental Type, all nearby party members gain a 12% Elemental DMG Bonus for the Elemental Types involved in the elemental reaction for 15s. If the equipping character is in the Nightsoul's Blessing state when triggering this effect, all nearby party members gain an additional 28% Elemental DMG Bonus for the Elemental Types involved in the elemental reaction for 20s. The equipping character can trigger this effect while off-field, and the DMG bonus from Artifact Sets with the same name do not stack.
(2) HP +20%
(4) When an Elemental Skill hits an opponent, the ATK of all nearby party members is increased by 20% and their Shield Strength is increased by 30% for 3s. This effect can be triggered once every 0.5s. This effect can still be triggered even when the character who is using this artifact set is not on the field.
(2) HP +20%
(4) Elemental Skill and Elemental Burst DMG will be increased by 10%. After the equipping character takes DMG, the aforementioned DMG Bonus is increased by 80% for 5s. This effect increase can have 5 stacks. The duration of each stack is counted independently. These effects can be triggered even when the equipping character is not on the field.
(2) Energy Recharge +20%
(4) Increases Elemental Burst DMG by 25% of Energy Recharge. A maximum of 75% bonus DMG can be obtained in this way.
(2) HP +20%
(4) When an Elemental Skill hits an opponent, the ATK of all nearby party members is increased by 20% and their Shield Strength is increased by 30% for 3s. This effect can be triggered once every 0.5s. This effect can still be triggered even when the character who is using this artifact set is not on the field.
(2) HP +20%
(4) When an Elemental Skill hits an opponent, the ATK of all nearby party members is increased by 20% and their Shield Strength is increased by 30% for 3s. This effect can be triggered once every 0.5s. This effect can still be triggered even when the character who is using this artifact set is not on the field.
(2) Healing Bonus +15%.
(4) When the character equipping this artifact set heals a character in the party, a Sea-Dyed Foam will appear for 3 seconds, accumulating the amount of HP recovered from healing (including overflow healing). At the end of the duration, the Sea-Dyed Foam will explode, dealing DMG to nearby opponents based on 90% of the accumulated healing. (This DMG is calculated similarly to Reactions such as Electro-Charged, and Superconduct, but it is not affected by Elemental Mastery, Character Levels, or Reaction DMG Bonuses). Only one Sea-Dyed Foam can be produced every 3.5 seconds. Each Sea-Dyed Foam can accumulate up to 30,000 HP (including overflow healing). There can be no more than one Sea-Dyed Foam active at any given time. This effect can still be triggered even when the character who is using this artifact set is not on the field.
(2) Character Healing Effectiveness +15%
(4) Using an Elemental Skill or Burst increases healing received by all party members by 20% for 10s.
(2) Healing Bonus +15%.
(4) When the character equipping this artifact set heals a character in the party, a Sea-Dyed Foam will appear for 3 seconds, accumulating the amount of HP recovered from healing (including overflow healing). At the end of the duration, the Sea-Dyed Foam will explode, dealing DMG to nearby opponents based on 90% of the accumulated healing. (This DMG is calculated similarly to Reactions such as Electro-Charged, and Superconduct, but it is not affected by Elemental Mastery, Character Levels, or Reaction DMG Bonuses). Only one Sea-Dyed Foam can be produced every 3.5 seconds. Each Sea-Dyed Foam can accumulate up to 30,000 HP (including overflow healing). There can be no more than one Sea-Dyed Foam active at any given time. This effect can still be triggered even when the character who is using this artifact set is not on the field.
(2) Increases Elemental Mastery by 80.
(4) Upon triggering an Elemental Reaction, increases all party members' Elemental Mastery by 120 for 8s.
This set is a niche option for Diona. It can be considered in teams which value EM and where she can trigger a reaction while on-field. Do keep in mind that Instructor being limited to a 4* set means your stat potential will be lower.
(2) HP +20%
(4) When an Elemental Skill hits an opponent, the ATK of all nearby party members is increased by 20% and their Shield Strength is increased by 30% for 3s. This effect can be triggered once every 0.5s. This effect can still be triggered even when the character who is using this artifact set is not on the field.
This set is a niche option for Diona. It can be considered in teams including some variants of Ganyu Freeze which have shorter rotation lengths meaning Diona's burst will not be used every rotation, and where you can snapshot the ATK% buff onto Ganyu's burst.

Best Stats

Sands
Energy Recharge / HP%
Goblet
HP%
Circlet
HP% / Healing Bonus
Substats
Energy Recharge / HP% / CRIT Rate / HP
*Crit Rate substats are only recommended when using Favonius Warbow.

Best Weapons

Base ATK454
Energy Recharge+61.3%
SourceWish
Windfall
CRIT hits have a 60~100% chance to generate a small amount of Elemental Particles, which will regenerate 6 Energy for the character. Can only occur once every 12~6s.
It is recommended to build some Crit Rate in substats to have a higher chance of triggering the bow passive for energy.
Base ATK565
Energy Recharge+30.6%
SourceWish
Composed
After dealing damage to an opponent with an Elemental Skill, the skill has a 40~80% chance to end its own CD. Can only occur once every 30~16s.
[R3+] Preferred over Favonius Warbow at higher refinements when batterying another Cryo character.
Base ATK608
Energy Recharge+55.1%
SourceEvent Wish
The Parting Refrain
A part of the "Millennial Movement" that wanders amidst the winds. Increases Elemental Mastery by 60~120. When the Elemental Skills or Elemental Bursts of the character wielding this weapon hit opponents, that character gains a Sigil of Remembrance. This effect can be triggered once every 0.2s and can be triggered even if said character is not on the field. When you possess 4 Sigils of Remembrance, all of them will be consumed and all nearby party members will obtain the "Millennial Movement: Farewell Song" effect for 12s. "Millennial Movement: Farewell Song" increases Elemental Mastery by 100~200 and increases ATK by 20~40%. Once this effect is triggered, you will not gain Sigils of Remembrance for 20s. Of the many effects of the "Millennial Movement," buffs of the same type will not stack.
Base ATK542
HP+66.2%
SourceEvent Wish
Dryas's Nocturne
The equipping character can gain the Remedy effect. When they possess 1/2/3 Remedy stacks, Max HP will increase by 12%/24%/40%~24%/48%/80%. 1 stack may be gained when the following conditions are met: 1 stack for 25s when using an Elemental Skill; 1 stack for 25s when the value of a Bond of Life value increases; 1 stack for 20s for performing healing. Stacks can still be triggered when the equipping character is not on the field. Each stack's duration is counted independently. In addition, when 3 stacks are active, Elemental Burst CRIT Rate will be increased by 28%~56%. This effect will be canceled 4s after falling under 3 stacks.
This bow will be your best choice for stronger shields, however the Energy Recharge and useful passives of other weapons will generally make them a suboptimal pick.
Base ATK354
HP+46.9%
SourceChest, Quest, NPC
Cull the Weak
Defeating an opponent restores 8~16% HP.
This bow will be your best choice for stronger shields, however the Energy Recharge and useful passives of other weapons will generally make them a suboptimal pick.
Base ATK510
HP+41.3%
SourceEvent
Silent Trigger
When an attack hits an opponent, deal AoE DMG equal to 40~80% of Max HP at the target location. This effect can be triggered once every 15s.
R5. This bow will be your best choice for stronger shields, however the Energy Recharge and useful passives of other weapons will generally make them a suboptimal pick.