Enhancing Heroes or Pets in Seven Knights Re:BIRTH (7K Rebirth) can be performed from the Power Up menu. Below are details on how to enhance, what it's for and its success rates!
What is Enhance?
Uses Extra Heroes and Pets to Enhance
Enhance is a feature that allows you to increase a hero's or pet's Attack, Defense, and HP by consuming other heroes or pets as materials. This feature becomes available after clearing Adventure 1-6. There are two ways to access enhancement: Power Up Heroes and Grow Pets. Once a unit is powered up, a plus (+) value will appear on its icon to indicate the stat boost.
How to Enhance
1. Select Power Up Heroes or Grow Pets
Tap Power Up at the bottom left of the home screen. Select Power Up Heroes to enhance heroes, or Grow Pets to enhance pets.
2. Switch to Enhance Tab for Grow Pets
When selecting Grow Pets, the screen will default to the Hatch tab. To proceed with enhancement, switch to the Enhance tab on the left. For Hero Enhancement, the Enhance tab is already selected by default, so you can go straight to Step 3.
3. Select Character or Pet to Enhance
After selecting the base hero or pet you want to Enhance from the options at the bottom of the screen, select the desired materials and proceed with the power up. Take note that only 4★ and higher pets can be powered up. Pets 3★ and below will not appear in the base selection screen.
Enhancements Can Fail
Enhance has a success rate, and if the material’s rank is lower than the target's, the enhancement may fail. Whenever the attempt fails, the material hero will still be consumed, so we recommend using expendable heroes with higher success rates.
 Tips! | Each time Enhance fails, the chance of success increases by 1%. |
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▼ Click for List of Success Rates by Rank
Success Rates Are Calculated Individually
You can select multiple materials units, but their success rates are not combined. Each one is calculated individually. If the enhancement level reaches the maximum of +5 before all materials are used, the remaining materials and any Gold spent on enhancement will be refunded.
Use the Auto Add Feature
Open the material selection settings by clicking the round icon next to Auto Add. When you press the Auto Add button, you’ll register all materials that meet your set conditions instantly. This convenient feature can save you some time, so don’t forget to use it!
Enhancement Benefits
Stat Boosts
When you Enhance, your Attack, Defense, and HP stats will increase, making your heroes and pets stronger in battle. This enhancement method is just as important as leveling up and is essential for clearing high-difficulty quests.
Enables Rank Up and Fusion
To use other Power Up methods like Rank Up and Fusion, you must first raise the enhancement level to the maximum of +5. Rank Up is especially important and a key way to strengthen your heroes and pets.
| Tips! | Even after ranking up, the hero level remains the same, but the enhancement level returns to 0. To rank up again, you need to raise the enhancement level to +5 once more. |
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Enhance Success Rate
Base and Material Rank Success Rates
| 6★ Mats | 5★ Mats | 4★ Mats | 3★ Mats | 2★ Mats | 1★ Mats | |
| 6-Star | 100% | 50% | 25% | 10% | 1% | 0.1% |
| 5-Star | 100% | 50% | 25% | 10% | 1% | |
| 4-Star | 100% | 50% | 25% | 10% | ||
| 3-Star | 100% | 50% | 25% | |||
| 2-Star | 100% | 50% | ||||
| 1-Star | 100% | |||||
The success rate of enhancing is determined by the difference between the target's rank and the material's rank, as shown above. If the material's rank is the same or above the target's, enhancement will succeed 100% of the time, and the success rate decreases as the material's rank gets lower.
Recommended Use for Each Material
| Target Rank | Recommended Material |
| 1★ Target | 1 - 4★ Materials |
| 2★ Target | 2 - 5★ Materials |
| 3★ Target | 3 - 6★ Materials |
Since a success rate of 1% or 0.1% is too low, a good rule of thumb is to use materials that give at least a 10% success rate, preferably 25% or more. Also, it is more recommended to use 4★ materials or higher for Transcendence rather than as enhancement materials.
Related Seven Knights Re: BIRTH Articles
▶Back to Top PageRanking Articles
| Ranking Articles | ||
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  Best Hero Tier List |  Reroll Tier List |  Best Pet Tier List |
How To Reroll Fast?
Leveling & Ruby Farming Guide
Daily Things to Do
Latest News & Updates
Best Heroes and Teams
Best Full Moon Summon Heroes
Moon Box Guide & How To Farm
Advent Expedition Guide
Best Low Rarity Heroes
Best Premium Shop Purchases
Early Game Guide
Player Rank (Adventurer Skill) Guide
Enhance Guide
Equipment Powerup
Pet Guide
Formation Guide
Guild Guide
Party Guide
Debuff Types Guide
Gacha Animation Effects
Accessory Guide
Hero Stats Guide
Arena Guide
Coupon Codes
Infinite Tower Guide
Castle Rush Guide
Shop Items to Buy
Fodder Hero Guide
Destroyer Gaze Guide
Ox King Guide
Iron Devourer
Tower of Trials Guide
7K Chess Guide
Equipment Preset Guide
Battle Statistics Guide
Recommended Relay Purchases Guide
Weakness Hit Guide & What is It?
Error Guide and How to Fix
Burn / Dragonflame Guide
Paralysis Guide
Bleed Guide
Freeze Guide
Stun Guide
Petrify Guide
Shock Guide
Sleep Guide
