Robert's signature weapon is the divine Wolfspirit Blade. It is a two-handed longsword, blade length of four feet. The crossguard is in an upward angel wing motiff that can be used as a sword-catcher. There is a decorative sapphire teardrop in the center of th crossguard. The pommel is the shape of a wolf's head. Within its jaws is an enchanted gemstone which stores power from slain demons that can be purified and used to empower temporary blade enchantment spells, or launch a divine vortex slash through the air.
The sword is made of godmetal; a material shed from the creator God Ra's golden feathers, and as such the blade has a natural golden hue while boasting the strength of crucible steel. Whenever a new king or queen of Silvermyst blood is sent to face the trial of ascension, they take the divine weapon from their parent and trek to the peak of Mount Godspeak. There they meet Ra, and the weapon is transformed into a metal ingot. From there, the Silvermyst must reforge the metal into a weapon that best reflects themselves. It has been a sword, a bladed lance, a staff, a pair of daggers, a fanged mace and even a halberd in times past. More often thean not, though, a sword is the most common form.
Each time it is reforged, a portion of the Silvermyst's soul is imbued into the metal, harmonizing it to the user. Each soul fragment from each new Silvermyst makes the divine power of the weapon even stronger in a way similar to My Hero Academia's One For All quirk.
There are a few permanent enchantments to the metal that cannot be removed from it. First is Bloodbond. Bloodbond is an enchantment that will only allow those of Silvermyst blood to wield the sword, and prevents the blade from harming anyone of of the Silvermyst bloodline. It will shock and even render unconscious any non-Silvermyst trying to hold it (depending on how long they try to hold onto it). When trying to strike a Silvermyst with it, the weapon will repulse away from the Silvermyst upon contact.
The second enchantment is Demon's Bane. Any demon slain by the weapon will have it's soul sucked into the weapon and will permanently obliterate the soul of the demon. This is one of the few means of inflicting true death upon a demon. This enchantment also prevents demons wounded by this weapon from healing their wounds indefinitely. It has also been used in a creative way by Robert Silvermyst to draw out the demonic essence from repentant demon Lotus and restoring her to a mortal form.
The final enchantment is Indestructibility. This weapon cannot break, be destroyed or altered save by Ra and the reforging ritual up on Mount Godspeak.
The blade can hold temporary enchantments (buffs, elemental enchantments, etc), and while reforging, a Silvermyst can insert enchanted gemstones to give an added enchantment to the weapon that isn't temporary, but can be removed upon the next reforging. The gemstone in the pommel adds the enchantment of Purified Stored Power, which has been mentioned earlier.