Throwing Dagger of Ice

From the Hero Tokens quest introduced in Intelligent Designs.

Throwing Dagger of Ice

Value: 0
1,500 Burden Units

This icy throwing dagger is unenchantable, but carries within its frozen core an endowment of powerful spells. Its construction is singular and strange. It bears no marks of its forging or smithing, and instead seems to have crystallized out of raw magic.

Special Properties: Unenchantable, Dropped on Death, Biting Strike

Damage: 120 - 180, Cold
Speed: Very Fast (10) (0)
Uses Thrown Weapon Skill

Casts the following spells: Atlan's Alacrity, Asmolum's Boon, Major Thrown Aptitude, Infected Caress, Elysa's Sight

Spellcraft: 500
Mana: 10000
Mana Cost: 1 point per 30 seconds.

Spell Descriptions:

Atlan's Alacrity (Improves a weapon's speed by 70 points.)
Asmolum's Boon (Increases the target's Thrown Weapons skill by 40 points.)
Major Thrown Weapons Aptitude (Increases the target's Thrown Weapons skill by 15 points. Additional spells can be layered over this.)
Infected Caress (Increases a weapon's damage value by 22 points.)
Elysa's Sight (Increases a weapon's Attack Skill modifer by 17.0 percentage points.)

Notes

Made by using a Throwing Daggers of Ice Summoning Gem purchased with a Hero Token from Pevilo ibn Djimin.
The item has BD and HS spells, but neither appear when the weapon is wielded, they may or may not have an effect.
Each gem gives 250 single-use daggers, though they do not appear to have a timer like the other weapons purchased with Hero Tokens.