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Soul Inscription is the random-option layer on AION 2 equipment, and Soul Binding is the system that adds one extra option on top of it. NCsoft's English announcements use both names. The rules below come from the Korean and Taiwanese service. NCsoft's global launch rewards already include Philosopher's Stone: Revelation, the Soul Binding material, but as of October 2, 2026 NCsoft has not published global costs.

Soul Inscription

Each piece of gear rolls a set of Soul Inscription options from its own pool. A Unique weapon rolls four; the craft-only Genesis and Nemesis Dragon Lord weapons and guards come with six base options. Each option also has an inscription rate, and options can be strengthened, tuned and reset. Since April 22, 2026, gear with no Soul Inscription at all cannot use the Integrated Enhancement menu, so inscribing a piece is the first step of investing in it.

The pool depends on the item. On a Unique Gladiator greatsword it includes Might, Precision, Attack, Accuracy, Critical Hit, HP, MP, Combat Speed, Status Effect Chance, Multi-hit Chance, Critical Attack, Back Attack, Front Attack, Block, Damage Boost and Weapon Damage Boost. The frontal stats arrived with Chapter 1 on July 1, 2026, which added frontal damage boost, damage resistance, attack, defense, critical and critical resistance stats and made them available through Soul Inscription, pet Genus Insight and manastones. On May 13, 2026, the shock accuracy option on Guards was changed to status effect accuracy.

Tuning

Tuning rerolls an inscribed option. It is done from Integrated Enhancement, Soul Inscription, Tuning, and it consumes Tuning Stones, which come in Unique and Hero grades.

Tuning Stone Fragments come from Expedition Odyle Energy Cubes, whose fragment payout was doubled on February 11, 2026, and from the reward chests of the Chapter 1 field bosses. Sanctuary bosses have also dropped whole Unique Tuning Stones. Wing enhancement consumes Unique Tuning Stones too, so the two systems draw on the same supply.

Soul Binding

Soul Binding was added on February 11, 2026. Once the Soul Inscription rate of a Unique or Hero-grade item reaches 100 percent, you can bind it to add one more option. The new option is picked at random from the options that item can roll, never duplicates one the item already has, and arrives at a 100 percent rate. It can then be strengthened, tuned or reset like any other option, although tuning or resetting it rerolls that 100 percent rate.

• Unique gear received as a quest reward cannot be bound.

• A Soul Binding option is not carried over by succession. If the source item has an inscription identical to the target's bound option, that inscription is left out of the transfer.

• Philosopher's Stone: Revelation comes from Expedition Conquest (Normal and Hard) Odyle Energy Cubes, from the guaranteed rewards of two Expedition Conquest dungeons since March 11, 2026, from Citadel of the Fallen Daeva Conquest cubes since July 8, 2026, and from converting Sealed Philosopher's Stones.

Philosopher's Stone: Power

The May 27, 2026 update added Philosopher's Stone: Power, which NCsoft's English announcement describes as enabling Soul Binding for the Genesis and Nemesis Dragon Lord equipment and other gear. Ten Philosopher's Stones: Revelation convert into one Power, and since August 19, 2026 a recipe also converts Power back into Revelation.

The stones began as a sealed item. The January 21, 2026 update put Sealed Philosopher's Stones in the Season shop and in Expedition Conquest cubes and said they would later open an extra Soul Inscription slot; Soul Binding is where they ended up, since Sealed Philosopher's Stones convert into Philosopher's Stone: Revelation.

Carrying Inscriptions Forward

Succession moves Soul Inscription along with enhancement and breakthrough. The January 21, 2026 rules handle slot mismatches: if the source has more slots than the target, a random subset of its options transfers; if the target has more, every option transfers into random positions and the target keeps its own options in the spare slots. A value above the target item's maximum for that option is cut to the maximum, and a value below its minimum is raised to the minimum. A successful transfer also resets the target's tuning attempt count.

Related Pages

Enhancement and Breakthrough · Succession Crafting · Gear and Progression · Weapons