Consumptive [Property]

This weapon is dark in color, and its blade or head is covered with menacing runes.

When activated, a consumptive weapon is shrouded in negative energy that seems to draw light into it. The negative energy does not harm you as long as you have the weapon in hand. The effect persists until you speak a second command word. A weapon that has this property deals an extra 1d8 points of damage to any living creature on a successful hit.

Projectile weapons bestow this property upon their ammunition.

Prerequisites: Craft Magic Arms and Armor, enervation.

Cost to Create: Varies.

Source: Magic Item Compendium, page 31. Originally published in Planar Handbook, page 78, where it did only 1d6 points of damage on a hit.

Consumptive Burst [Property, Synergy]

This weapon is dark in color, and its blade or head is covered with menacing runes.

A consumptive burst weapon functions as a consumptive weapon that also flares with excess negative energy upon striking a successful critical hit. The negative energy does not harm the wielder. In addition to the extra negative energy damage from the consumptive ability, a consumptive burst weapon bestows one negative level. Bows, crossbows, and slings so crafted bestow the effect upon their ammunition. Even if the consumptive ability is not active, the weapon still bestows one negative level on a successful critical hit.

Projectile weapons bestow this property upon their ammunition.

Prerequisites: Craft Magic Arms and Armor, enervation.

Cost to Create: Varies.

Source: Planar Handbook, page 79. For some reason, this property wasn’t brought into the Magic Item Compendium along with the consumptive property, so it has been converted to a synergy property to it here.