Artificer Attack 23Chaos Weapon
With your strike, you conjure elemental powers that rage around the weapons of you and your allies.
Encounter Arcane, Varies, Weapon
Standard Action Melee or Ranged weapon
Target: One creature
Attack: Intelligence vs. AC
Hit: 2[W] + Intelligence modifier damage. Choose a damage type: acid, cold, fire, force, lightning, or thunder. The attack deals damage of this type to the target. Until the end of your next turn, the weapon attacks of each ally within 2 squares of you deal extra damage of the chosen type equal to 1d8 + your Constitution modifier.
Published in Eberron Player's Guide, page(s) 55.