Cold Blooded

Cold Blooded is a  passive ability, unlocked at character level 30.

In-game
Damage buff is multiplicative, and affects even attacks of other players. It is most powerful if coupled with items like or.

Trivia

 * The description may be a reference to The Snow Queen 1844 fairy tale by Hans Christian Andersen.

Development
Before patch 2.0, the ability only increased damage taken from Cold spells.

In early beta, Deep Freeze skill existed that resembled this passive effect.