You possess the power of the Old Reliable, which you bestow upon a chosen weapon or piece of equipment changing it into a growing legacy of power and significance. This power allows the weapon to evolve and become more formidable as it gains a legendary status of its own.
Selecting a weapon, armor, or clothing of your choice, you begin your journey with this cherished item. Over time and through your actions, the weapon's power and capabilities will progressively increase, becoming more attuned to your combat style and personal achievements.
Each milestone reached with the weapon, such as defeating specific enemies or performing signature moves repeatedly, enhances its effectiveness and unlocks new abilities. For example, if you slay numerous fishmen with the weapon, its damage against fishmen amplifies, instilling fear in them. Similarly, practicing and executing a particular special move with the weapon will make it more efficient, requiring less effort or energy to execute.
With the passage of time, the weapon transcends its original form and gains unique powers and properties based on your exploits. For instance, consistently dispatching foes with a single strike may grant the weapon the ability to instantly kill lesser adversaries with a mere scratch or even by being in its presence.
The potential of Old Reliable's Legacy is boundless, allowing the weapon to acquire multiple powers and adapt to various situations as your journey progresses. The longer you wield the weapon, the more significant and diverse its benefits become, expanding its legacy far beyond its initial capabilities. Furthermore, the power of Old Reliable's Legacy applies retroactively, considering the weapon's history prior to obtaining this ability.