Fai is a Mythic character in Seven Knights Re:BIRTH. Learn about Fai's best builds, rating, tier, Transcendence effects, and skills.
Table of Contents
Fai Rating & Stats
| ★4 | ★5 | ★6 |
|---|---|---|
Beginning of a Legend | Knight of Flame | Desert Blaze |
| Where to Use | Arena / Total War / Guild War / Earth Particle Dungeon / Adventure |
|---|---|
| Affiliation | Special - Seven Knights of Old |
| How to Get | Infinite Tower / Hero Fusion |
Fai Rating & Tier
| Arena Total War | Guild War | ||||||||
|---|---|---|---|---|---|---|---|---|---|
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| Advent Expedition | Nightmare Farming | Castle Rush | Raid (Lv .10+) | Infinite Tower | |||||
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| Review | |||||||||
| - A top-tier attacker who attacks with Burn and Execution - Also has great durability with Revive and Barrier creation - Excellent as a debuffer - Becomes extremely powerful at 6 Transcendence when the number of Execution targets increases - Cannot be obtained from Summon | |||||||||
A Top-Tier Attacker with "Execution"
A unique Hero with an Execution skill that instantly defeats low HP targets, she ranks among the top attackers. Combined with her durability and support capabilities, she is an extremely powerful Hero who can be effective in any battle.
Exclusive Hero, Not in Summons
The Seven Knights of Old cannot be obtained from the gacha and are only available through Guild War rewards, clearing the 200th floor of the Infinite Tower, or Fusion. As a result, she is difficult to acquire and requires considerable time to reach 6★ Transcendence, making her a Hero that demands significant dedication.
"Execution" is the Strongest PvP Skill
As mentioned, she is effective in various battles, but Fai truly shines in PvP content like the Arena and Total War. Her Execution skill is especially powerful, allowing her to instantly defeat up to 4 enemies if they are in an Attack or Defense Formation.
User Score
Fai Stats
* Each stats is based on the max level in the Codex, with enhancement +5 applied.
| Physical ATK | DEF | HP | SPD |
|---|---|---|---|
| 1,500 | 571 | 3,326 | 29 |
* The following values are the same across all currently available characters.
| Crit Rate | 5% |
|---|---|
| Crit Damage | 150% |
| Weakness Hit Chance | 0% |
| Block Rate | 0% |
| Damage Taken Reduction | 0% |
| Effect Probability | 0% |
| Effect Resistance | 0% |
Best Build for Fai
Recommended Equipment Sets
| Set | Reason for Recommendation |
|---|---|
Vanguard | - Increases Barrier HP and Burn damage - Recommended for those who want to balance offense and defense |
Assassin | - Boosts damage output by increasing Crit Rate - Recommended for offensive roles |
Gatekeeper | - Compensates for low durability by increasing Block Rate - Recommended for strengthening durability |
Fai is a powerful attacker specializing in Execution and Burn. Vanguard is recommended if you want a balance of offense and defense, Assassin for offensive specialization, and Gatekeeper if you want to compensate for low durability.
Vanguard Set (Balanced Type)
| Set | Main Stat Candidates | Substat Candidates |
|---|---|---|
Vanguard | [Weapon] - All Attack (%) - Crit Rate [Armor] - All Attack (%) - Block Rate | - Speed - All Attack (%) - Crit Rate - Crit Damage - Weakness Hit Chance - Block Rate |
Increasing Attack also boosts Barrier HP and Burn damage, so Vanguard is recommended if you want to balance offense and defense. Try to increase Attack just enough to avoid Kyle's Gaze when building this character.
Vanguard Set and Best CharactersAssassin Set (Damage Type)
| Set | Main Stat Candidates | Substat Candidates |
|---|---|---|
Assassin | [Weapon] - Crit Rate - All Attack (%) - Crit Damage [Armor] - All Attack (%) - Block Rate | - Speed - Crit Rate - All Attack (%) - Crit Damage - Weakness Hit Chance - Block Rate |
Increasing Crit Rate with the Assassin set is recommended if you want to attack not only with Burn and Execution, but also with pure raw damage.
Assassin Set and Best CharactersGatekeeper Set (Durability Type)
| Set | Main Stat Candidates | Substat Candidates |
|---|---|---|
Gatekeeper | [Weapon] - All Attack (%) - Crit Rate [Armor] - All Attack (%) - Block Rate | - Speed - All Attack (%) - Crit Rate - Crit Damage - Weakness Hit Chance - Block Rate |
Since the original durability is not very high, using the Gatekeeper set is an option to prevent being defeated quickly. Think of it as compensating for weaknesses rather than specializing in durability; the stats can still focus on offense.
Gatekeeper Set and Best CharactersFai Skills
| Jump to Skill Details | |||
|---|---|---|---|
| ▼Basic Attack | ▼Skill 1 | ▼Skill 2 | ▼Passive Skill |
Basic Attack
- Deals damage equal to 100% of Physical Attack 1 time(s).
- 35% chance to inflict
Increases Damage: To 130% of Physical Attack.
Skill 1: Spear of Agnia
- Each attack has a 60% chance to inflict
- Deals damage equal to 57% of Physical Attack 2 time(s).
Adds Effect: 100% chance to inflict 29%
Increases Chance:
Skill 2: Flame Dragon's Greetings
- Inflicts 3
- 100% chance to inflict
- Deals damage equal to 340% of Physical Attack plus 20% of the target's Max HP 1 time(s). (HP-based damage limited to 300% of caster's Attack)
- Instant
- 60% chance to inflict
- Deals damage equal to 125% of Physical Attack plus 14% of the target's Max HP 1 time(s). (HP-based damage limited to 150% of caster's Attack)
Increases Damage: To 410% of Physical Attack plus 26% of the target's Max HP.
Increases Effect:
Adds Effect:
Passive Skill: Surging Flames
- Inflicts
- Revives with 80% HP upon falling in battle. [Once per Battle]
- Grants a
- Deals additional damage equal to 70% of Physical Attack against targets inflicted with [
Increases Effect:
Increases Effect: HP gained upon revival becomes 100%
Fai Transcendence Effects
| Stage | Effects |
|---|---|
| T1 | Increases All Attack by 12% |
| T2 | Increases All Attack by 6% |
| T3 | Increases HP by 18% |
| T4 | Increases Crit Rate by 18% |
| T5 | Increases All Attack by 12% |
| T6 | Increases All Attack by 6% |
| T7 | Increases All Attack, Defense, and HP by 2% |
| T8 | Increases All Attack, Defense, and HP by 2% |
| T9 | Increases All Attack, Defense, and HP by 2% |
| T10 | Increases All Attack, Defense, and HP by 2% |
| T11 | Increases All Attack, Defense, and HP by 2% |
| T12 | Increases All Attack, Defense, and HP by 2% |
Fai's Profile

| Race | Elf | Zodiac Sign | Capricorn |
|---|---|---|---|
| Gender | Female | Age | ??? |
| Blood Type | B | Height | 164 cm |
| Birthday | 1/6 | Weight | 54 kg |
Related Seven Knights Re: BIRTH Articles
Ranking Articles
| Ranking Articles | ||
|---|---|---|
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Radgrid
Bai Long
Xiao
Trude
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Tue
Wed
Thur
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Sat
Sun
Physical
Magic
Tank
Death
Gaze
Ox
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Fire
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Light
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Gold