OFFICIAL STARTER GUIDE · heroes
Fusion and Soulbinding: unlock requirements and preparation
Check both account requirements, choose the intended recipe and inspect what will be consumed before creating or strengthening a special hero.
When does Fusion unlock?
Fusion requires Overworld level 20 and Ladder stage 100 cleared. Both are required. Reaching the stage without clearing it is not enough, and an individual hero's level does not replace your account's Overworld level.
When does Soulbinding unlock?
Soulbinding requires Overworld level 30 and Ladder stage 200 cleared. Earned Ladder progress retained through Ascension counts toward these stage requirements. Players who already used Soulbinding when it opened at stage 150 keep it. Owning a special hero preserves its use, but ownership alone does not bypass the requirements for another creation or offering.
How should I prepare a Fusion?
Open the intended result and inspect its recipe. Check the exact ingredient species and the eligibility of the actual heroes you own. Read the result preview and the consumption details before confirming. Do not assume a similar-looking variant or another Zodiac of the same element substitutes for the named ingredient.
Keep a useful fighting roster after the transaction. If an ingredient is currently a key damage dealer or support hero, decide how you will replace that role before committing it. A rarer result is not automatically the best immediate upgrade for every team.
What should I check before an offering?
Read the selected hero's current Soulbinding or offering preview. Confirm the target, the required monsters or materials, the result and any preservation option actually available in the screen. Do not treat a guide's description of one recipe as a promise about every other recipe.
Why is the feature still locked or pending?
Check both account counters first. Then check recipe eligibility and whether an earlier request is still being confirmed. A connection interruption can leave the result uncertain; use the offered recovery action before submitting another transaction. When asking for help, include the displayed requirement and recipe name rather than only the hero's level.