Random Magic Weapons (any level)

An icy burst weapon functions as a frost weapon that also explodes with frost upon striking a successful critical hit. The frost does not harm the hands that hold the weapon. Icy burst weapons deal +1d10 points of bonus cold damage on a successful critical hit. If the weapon's critical multiplier is x3, add +2d10 points of bonus cold damage instead, and if the multiplier is x4, add +3d10 points of bonus cold damage. Bows, crossbows, and slings so enchanted bestow the cold energy upon their ammunition.
Aura: Moderate evocation
Caster Level: 10th
Requirements: Craft Magic Arms and Armor, chill metal or ice storm
Price: +2 bonus
Source: Dungeon Master's Guide v.3.5