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Numb is a rune effect in Ray of Frost, an Offensive Wizard skill.

This rune effect upgrades the beam with additional slowing, reducing the target speed from 30% at the base skill to 60% with this rune.

The damage and casting cost are unchanged, though the beam looks a bit wider and colder.

Skill Rune Effects[edit]

Refer to the Ray of Frost rune effects article for thorough descriptions of all five rune effects in this skill, including screenshots, videos, strategy tips, and other related information.

Name Level Description
Ray of Frost

1 Cost: 16 Arcane Power

Project a beam of frozen ice that blasts enemies within 5 yards of the first enemy hit for 430% weapon damage as Cold and Slows their movement by 60% for 3 seconds.

Ray of Frost damage is increased by 405% weapon damage every second, up to a maximum total of 1240% weapon damage as Cold.

MedRuneC Numb
1 Ray of Frost has a 10% chance to Freeze enemies for 1 second and increases the Slow amount to 80% for 3 seconds.

This skill is affected by your characters:


Screenshots and movies will be added post-release.


Prior to the skill revision in February 2012, this rune effect was enabled by the Obsidian Rune, granting the following effect with a level 7 runestone:



Increase enemy slow amount to 50% for 8.5 seconds, but damage is reduced to 220% weapon damage per second as Cold.

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