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Weapon #5304

Prototype Amber
Base Attack42
Secondary StatHP
Secondary Stat Value9
Special (passive) AbilityGilding
Special (passive) Ability DescriptionUsing an Elemental Burst regenerates 4 Energy every 2s for 6s. All party members will regenerate 4% HP every 2s for this duration.
In-game DescriptionA dully gilded catalyst secretly guarded in the Blackcliff Forge. It seems to glow with the very light from the sky.
Stat Progression
LevelBase AtkHPAscension Materials
Special Ability Progression (Refine)
Refine Material:
Prototype Amber
Refine Level 1Using an Elemental Burst regenerates 4 Energy every 2s for 6s. All party members will regenerate 4% HP every 2s for this duration.
Refine Level 2Using an Elemental Burst regenerates 4.5 Energy every 2s for 6s. All party members will regenerate 4.5% HP every 2s for this duration.
Refine Level 3Using an Elemental Burst regenerates 5 Energy every 2s for 6s. All party members will regenerate 5% HP every 2s for this duration.
Refine Level 4Using an Elemental Burst regenerates 5.5 Energy every 2s for 6s. All party members will regenerate 5.5% HP every 2s for this duration.
Refine Level 5Using an Elemental Burst regenerates 6 Energy every 2s for 6s. All party members will regenerate 6% HP every 2s for this duration.
Obtained from recipe
Northlander Catalyst Billet
x 1+
Crystal Chunk
x 50+
White Iron Chunk
x 50
Weapon Gallery
Item Story

An ancient catalyst from Liyue's arsenal. The batch number has faded and no records exist to confirm the date of production.
The disc represents the cosmos and thus takes a circular form. At the center is a piece of Cor Purum, representing a heavenly body suspended in the firmament.

After the great chaos subsided, sinister forces still remained in the world. Thus, people abandoned traditional martial arts and tools and espoused the supernatural arts.
But the techniques used in catalyst production were antiquated, having remained unchanged in over a century. Thus, the catalysts of that age were fragile and broke on first use.
The thaumaturges flocked to Liyue and pleaded with Yun Hui, head of the house of Yun, to design a new type of catalyst for them.
Yun Hui proceeded to add a catalyst to the then-new series of improved weapon designs known as "the prototypes."

The disc is made of wood and rare ore. The Cor Purum in the center was a gift from the thaumaturges.
Cor Purum is produced by firing Cor Lapis in an urn for seven days squared (that is, forty-nine days) and then steeping it in fresh water drawn from a mountain spring for a further seven days squared.
The dual purification of fire and water renders Cor Purum unbreakable, and the thaumaturges also believe it allows the stone to act as a vessel for primordial cosmic energy. A catalyst with Cor Purum at its core can channel cosmic energy with the turning of the disc. Twelve full turns works the energy into its purest form.

Yun Hui observed that the Cor Purum had a warm, golden glow like that of amber. After discussion with the thaumaturges, he proposed to name the catalyst "Prototype Amber."
Thereafter, all catalysts made in Liyue were modeled on Yun Hui's prototype.


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    • Kokomi haver on 23 September 2021 at 12:51 am
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    I’m so happy that I have 6 catalyst billets so I can make this for my Kokomi !

    • Anonymous on 14 September 2021 at 2:04 pm
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    I think I found the perfect weapon for Kokomi

  1. Glad I didnt even realize that I crafted this weapon only for Kokomi, already maxed it out 😀

    • Raihimi on 28 August 2021 at 5:22 am
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    Only after Kokomi introduction, everyone finally talks about this old weapon. kek

    • hirose kokomi on 27 August 2021 at 7:55 pm
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    remember billets

    • kokomi haver soon on 25 August 2021 at 3:42 pm
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    do i have to refine this catalyst for kokomi? building her dps btw

      • YukiKitsune361 on 29 August 2021 at 2:44 pm
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      I mean it can give u more energy if u refine it which means u can get ur burst off more often, it should only have an 8 second downtime so near enough the same as hu tao, as long as u have a bit of energy recharge in there or electro resonance / favonius weapons

    • Maid on 15 August 2021 at 4:43 pm
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    If your planning for a full healler should she would be fine but the 4pc bonus would benefit kokomi only the 2pc would thus I think it’s more effective for 2pc heart of depth and 2pc maiden for every part of the passive to be used

    • Pastry on 4 August 2021 at 1:32 am
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    Everybody all hyped up about this being Kokomi’s BiS weapon, but what about 4pc maiden Healer Ningguang with this?

      • Yorubokuyo on 18 November 2021 at 8:17 pm
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      thats like going full EM with xiao with full viridiscent venerer set. NO, WTF xD

    • A. on 30 July 2021 at 8:43 am
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    so in terms of potential dps, this weapon has only 100 attack less than the other one (plus 8% hp bonus.. nothing)
    getting a 5star for so little…

      • eula simp on 6 August 2021 at 7:39 pm
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      “Normal Attack DMG is increased by 1% of the Max HP of the character equipping this weapon.” – in 5 star signature

        • Kokomi on 27 August 2021 at 10:25 pm
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        dude with 30k hp thats 300 dmg (not including other multipliers) i think

    • ChillPlayer on 28 July 2021 at 12:31 am
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    At R3, How much energy is the weapon capable of regenerate in total? Does anyone knows?

      • Kalatash on 28 July 2021 at 7:45 pm
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      It appears that the energy return pulses 3 times, so I would assume R3 would return 15 energy.

        • ChillPlayer on 30 July 2021 at 5:19 am
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        Thank you so much, seems pretty worth it.

        • DracaenaSomnolenta on 30 July 2021 at 8:18 pm
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        So… R3 Amber turns her burst into 55 energy cost?

        • Power Creeper on 16 August 2021 at 5:29 am
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        Another possibility is if the initial burst also regenerates energy, that would mean 4 pulses within 6s. For example at R3:
        0s: 5 energy
        2s: 5 energy
        4s: 5 energy
        6s: 5 energy

        Total: 20 energy

        Judging by the wording, I would assume the former (15 energy) is correct, but it would be nice if someone could test this out to confirm which numbers are correct.

    • KKomi OUR EXCELLENCY on 25 July 2021 at 12:43 pm
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    The new 5star catalyst will allow KKomi to deal more damage with normal attacks, but this 4star weapon will refund consistent energy in shorter duration and also heals party members passively.
    So Prototype Amber is better for Quickswap KKomi.

    I’m glad another 5star character best weapon is not tied exclusively to a limited 5star weapon (looking at you, HuTao).

      • ChillPlayer on 28 July 2021 at 12:21 am
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      It is also good for sustained damage on her burst state, for quickswap teams Thrilling Tales of Dragon Slayers probably is better. At least we have 2 really good F2P options. I would go for the Prototype because it gives you more HP and Energy Recharge, if it is good, i’ll refine it to R3.

      • Yorubokuyo on 18 November 2021 at 8:20 pm
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      Hu tao got dragonsbane tho, at r5 its only like a 6% behind c1 staff of homa

    • ChillPlayer on 25 July 2021 at 4:20 am
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    Is incredible how a new character can bring value to a weapon. BiS for Kokomi Carry.

    • Sckatos on 24 July 2021 at 7:22 pm
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    Kokomi’s F2P BiS weapon!

      • Luneward on 25 July 2021 at 4:25 am
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      Possibly even her BiS weapon, period. There’s only an 8% total HP% difference between this and her 5* weapon, and I’m not sure the extra NA damage on the 5* weapon can compete with the Amber’s ability to get her burst off cooldown more quickly.

        • rosariaisgod on 26 July 2021 at 6:19 am
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        her 5* weapon restores energy too

          • Kalatash on 28 July 2021 at 7:50 pm
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          That one returns energy based upon how many hits you can score in the time frame and it doesn’t increase with refinement (though I don’t judge 5* weapons on how well they refine), while this one is guaranteed energy regen. Eyeballing the numbers (and Kokomi’s apparent attack speed) I think that the 5* might return as much energy as R1 Amber IF you hit every hit that you can in the 12s window.

        • It’s cool though on 12 August 2021 at 12:25 pm
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        I wouldn’t go that far. It’s a great weapon but not better than the five star. Having another buff based on HP% to her autos is very nice. She gets a healing bonus increase which increases her damage and healing. Higher base attack. And still decent energy regen. It’s still her f2p best and a very solid comparison for being craftable. But it’s definitely not her BiS period.

      • will save for yae after kokomi on 26 July 2021 at 1:13 am
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      what is BiS?

        • Cesarito on 27 July 2021 at 10:55 pm
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        Best in Slot

        • ChillPlayer on 28 July 2021 at 12:22 am
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        It means Best in Slot :), the best weapon for that character.

    • Dakoten on 24 July 2021 at 4:45 pm
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    • Yoimiya on 24 July 2021 at 3:41 pm
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    Do you guys think this will be good for Kokomi?

    • A fellow simp on 24 July 2021 at 3:10 pm
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    Finally this weapon would be useful on Kokomi. POG

    • Riku on 24 July 2021 at 2:54 pm
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    Kokomi approve this weapon :3

    • Random Internet Stranger Opinion on 24 July 2021 at 1:44 pm
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    F2P Kokomi weapon

    • monk on 24 July 2021 at 10:51 am
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    bis f2p for kokomi ez

    • Traxahn on 24 July 2021 at 10:42 am
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    • rape on 4 June 2021 at 3:57 am
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    4% HP every 2s ?
    HP user or Hp personal charecter

    • Matheus on 21 February 2021 at 1:43 pm
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    this energy regenerate that ambar prototype do is for all team members or only for the user?

      • abc on 7 March 2021 at 5:34 am
      • Reply


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