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Understanding the Genshin Impact Blackcliff Slasher
The Genshin Impact Blackcliff Slasher is a 4-star claymore that you can obtain from Paimon’s Bargains. It is part of the “Montenegro Forge Weapons” series. It’s notable for its main additional stat, which is Critical Damage. This makes it a visually appealing option for many characters, especially Diluc with his vanilla skin. The Blackcliff weapons, including the Slasher, are easily accessible Crit Damage weapons.
To acquire the Blackcliff Slasher, you need to purchase it from the Paimon’s Bargains store using Masterless Starglitter. It costs 24 units of Starglitter, and you can buy up to three copies at a time. The weapons available in Paimon’s Bargains rotate monthly, alternating between the Blackcliff series and the Royal series. Specifically, the Blackcliff weapons are available in January, March, May, July, September, and November.
Dissecting its Power: Stats and Passive Skill
The Blackcliff Slasher has a base attack that scales from 42 at level 1 to 510 at level 90. Its secondary stat is CRIT DMG, which starts at 12% and goes up to 55.1% at level 90. This crit damage bonus is a significant draw for the weapon.
The weapon’s passive skill is called “Press the Advantage” or “Persecution of the Vanquished”. After defeating an opponent, your ATK is increased by 12% at refinement 1, going up to 24% at refinement 5, for 30 seconds. This effect can stack up to three times, and the duration of each stack is independent. Visually, each stack is represented by a black circle with a crimson glow rotating around the hilt, and upward arrows around the character signify the ATK increase. This passive can significantly increase damage output. The bonus percentage is retained even if you switch characters, allowing the next hero to benefit from the remaining duration and stacking levels, which can be used for powerful combos.
Who Benefits Most from the Blackcliff Slasher?
The Blackcliff Slasher is primarily recommended for main DPS (Damage Per Second) characters who spend a lot of time on the field and scale with ATK. Its CRIT DMG substat and ATK buff passive make it a damage-oriented weapon. It’s considered a flexible claymore because of its ability to boost damage for various characters.
Some specific characters who can effectively use the Blackcliff Slasher include:
| Character | Role / Element | Synergy & Benefits | Notes |
|---|---|---|---|
 Diluc | 5★ Pyro Main DPS | CRIT DMG substat fits his crit scaling; passive stacks align with AoE damage style | Great 4★ alternative; complements both aesthetics and damage |
 Eula | 5★ Cryo Main DPS | High burst damage and CRIT DMG scaling suit the weapon; easy stack maintenance | Strong F2P-friendly option for sustained output |
 Razor | 4★ Electro Main DPS | Increases overall damage potential | Great synergy for Physical DPS builds |
 Beidou | 4★ Electro Sub-DPS | Good for main DPS; matches visual design and splash art | Effective if used as on-field DPS |
 Chongyun | 4★ Cryo Main DPS | Enhances Burst and Normal Attack damage | Fits well with his quick skill-based rotations |
 Navia | 5★ Geo Main DPS | CRIT DMG helps scale damage; effect works well against multiple enemies | Solid option if CRIT Rate is balanced |
 Gaming | 4★ Pyro Main DPS | CRIT DMG supports his scaling; effect helps amplify |
However, the effectiveness of the Blackcliff Slasher can be situational. Its passive ability, which relies on defeating enemies, makes it less effective against single targets or bosses. The bonus is only activated if the wielder of the sword defeats the enemy, not if a support character or reactor finishes them off. Some players argue that as a “stat stick” (a weapon primarily valued for its stats rather than its passive), it might not always be worth it, especially if a character already has high Crit Damage.
Weighing Your Options: Is it Worth Your Starglitter?
The main query for many players is whether to spend Starglitter on Blackcliff weapons or save it for other items. Generally, many sources strongly recommend prioritizing characters, especially Bennett, over the Blackcliff Slasher. Bennett is considered a “clear improvement” to an account and a better long-term investment. C1 Bennett is widely regarded as superior to any weapon. His attack bonus scales off his total base attack, meaning any sword with a high base attack can work for him.
While the Blackcliff Slasher is a good 4-star DPS weapon, comparable to The Black Sword in some aspects, many free-to-play (F2P) craftable weapons or Battle Pass (BP) weapons can often outperform it or be better alternatives. For example:
| Weapon | Type / Rarity | Recommended For | Benefits | Notes |
|---|---|---|---|---|
| The Black Sword | Sword / 4★ (Battle Pass) | Ayaka, Keqing, DPS Sword users | CRIT Rate substat; heals on crit; boosts Normal/Charged Attack damage | Great alternative to 5★ swords; strong Battle Pass value if you reach level 50 |
| Prototype Archaic | Claymore / 4★ (Craftable) | Diluc, Razor | ATK% substat with AoE burst on hit | Reliable and accessible; sometimes outclassed by event weapons like Mailed Flower |
| Rainslasher | Claymore / 4★ | Diluc (Vaporize teams) | Elemental Mastery substat; bonus DMG to enemies affected by Hydro/Electro | Strong in reaction-focused comps; better than Blackcliff in some Vape builds |
| Harbinger of Dawn | Sword / 3★ | Albedo | High CRIT DMG and CRIT Rate boost when HP is above 90% | Excellent budget option for Albedo; new 4★ BiS expected during rerun |
| Mailed Flower | Claymore / 4★ (Event) | Diluc, Razor, Xinyan | EM and ATK%; synergizes with reaction teams | Event-limited; stronger than Prototype Archaic in certain comps |
| Fontaine Claymore | Claymore / 4★ (Assumed) | Reaction-based Claymore users | Likely tailored to Fontaine mechanics; |
The general consensus is that Blackcliff weapons are good as “budget weapons” or “stopgap weapons” to cover gaps in your weapon roster, especially if you desperately need Crit Damage and don’t have a better option. However, in the long term, saving Starglitter for characters or their significant constellations (like Bennett C0/C1, Xiangling C4, Beidou C2) is often a more impactful investment for your account’s overall power. You can easily acquire ascension materials through the Adventurer’s Handbook, making it less advisable to spend Starglitter on those.
Upgrading Your Blackcliff Slasher
To ascend and awaken your Blackcliff Slasher, you’ll need specific materials and duplicate weapons. To reach the 5th awakening level, you’ll need 4 duplicate copies of the weapon. Since Paimon’s Bargains only allows you to buy up to three copies per month, reaching full refinement (R5) for the Blackcliff Slasher can take a significant amount of time, as you’ll have to wait for it to reappear in the shop rotation.
The ascension process for the Blackcliff Slasher requires various materials across six phases. For example, to ascend from level 20 to 40 (1st Ascension), you need 5000 Mora, 3 items of a specific material, 3 more of another, and 2 of a third. To reach level 90, you’ll need a total of 607 Mystic Enhancement Ore and various quantities of Mist Veiled Elixirs, Mist Grass, and Insignias. These materials can be found in various locations, and a comprehensive list of ascension materials is provided in the sources.
In conclusion, the Blackcliff Slasher is a solid 4-star claymore that provides valuable Crit Damage and a conditional ATK buff. It can be a good option for main DPS characters who excel at defeating multiple enemies. However, it’s often advised to prioritize obtaining strong characters like Bennett with your Masterless Starglitter, as they tend to offer a more significant and long-lasting improvement to your account’s overall strength. Always consider your current roster, available resources, and alternative weapon options before making the purchase.
