Slayer Legend: How to Unlock Immortal Ku via Soul Tradepost

To craft your first Immortal Familiar in Slayer Legend, convert surplus familiar souls into currency at the Soul Tradepost and purchase the remaining Ku fragments required for promotion. This targeted exchange bypasses summon banner RNG, allowing you to bypass the Mythic level ceiling and upgrade Ku directly.

How the Soul Tradepost Works

The Soul Tradepost functions as a recycling shop for duplicate familiar materials. Instead of waiting for matching drops from summon banners, you exchange spare souls for dedicated tradepost currency. You then spend that currency on specific familiar shards rotating through the shop catalog.

Focusing currency exclusively on Ku is recommended for your initial Immortal promotion. Ku provides defensive utility paired with passive Attack scaling, giving your character the baseline durability and damage necessary for clearing higher adventure stages.

Managing Soul Conversions and Currency

Converting materials without a plan can accidentally stall other areas of your account. Follow these conversion guidelines before confirming trades:

• Convert low-tier duplicates: Common and uncommon familiar souls yield modest amounts of tradepost currency, but regular dungeon farming provides a reliable supply to scrap safely.
• Dismantle only inactive high-tier souls: Only convert Mythic or Legendary duplicates for familiars you do not use in active farming, stage progression, or promotion presets.
• Preserve global passive bonuses: Certain familiars grant account-wide buffs that remain active even when unequipped. Inspect each familiar's trait sheet before trading; keep duplicates until you finish unlocking any incomplete global stat nodes.
• Hold for awakening thresholds: Never dismantle souls for secondary familiars that are already close to an awakening milestone.
• Spend currency only on Ku: Do not spend tradepost tokens on consumables, evolution stones, or secondary familiars until your first Immortal Ku promotion is complete.

Step-by-Step Ku Immortal Promotion

Once you have gathered sufficient tradepost currency and the required Ku fragments, execute the upgrade:

1. Verify base status: Confirm your Mythic Ku is at its maximum level and that all prerequisite rank requirements are complete.
2. Purchase Ku fragments: Buy all available Ku shards from the Soul Tradepost. If you are short by a narrow margin, scrap a small batch of spare low-rarity souls to bridge the remaining balance.
3. Trigger the promotion: Open the Familiar menu, select Ku, and choose the Immortal rank promotion option. Confirm the required gold and duplicate soul costs.
4. Apply stockpiled experience: Level Ku immediately after promotion. Immortal familiars gain significantly larger base stat increases per level compared to Mythic familiars.
5. Equip and adjust loadouts: Place Immortal Ku into your active lineup. Its boosted damage reduction and Attack passives reduce incoming burst damage, allowing you to use offensive skill setups more safely in timed trials.