You align your spell with those you wove over your ally's armor, causing them to radiate an unnatural cold.
Area Burst 1 centered on an ally within 5 squares
Target: One enemy in the burst
Attack: Intelligence vs. Reflex
Hit: 1d8 + Intelligence modifier cold damage. Until the end of your next turn, any enemy that hits the ally takes cold damage equal to your Wisdom modifier.
Level 21: 2d8 + Intelligence modifier cold damage.
Ethereal Chill is a 1st level at-will attack power for artificers, introduced in Dragon Magazine article The Warrior Forge Artificer. [Dr381:56]
The character optimization guide rates this as a poor choice.[url] However, it may have merit if used in combination with a sticky defender or if using the Frostcheese style of build.