Cold Blood


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

This rune effect reduces the casting cost from 20 Arcane Power down to 12. It's not clear how this affects the cost per second to keep the skill in effect.

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.

MedRuneD Cold Blood
1 Reduce channeling cost to 11 Arcane Power.


Screenshots and movies will be added post-release.


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

Cold Blood


Reduce casting cost to 3 Arcane Power per second.