Ray of Frost is a wizard spell that damages and freezes enemies caught in the beam, slowing their movement and attack speed.
Crimson - Beam increases in damage the longer it remains in use, to a cap. Indigo - Wizard is surrounded by a swirling vortex of sleet, damaging any foes that come into contact. Obsidian - Decreases beam damage, but increases reduction in target movement and attack speed. Golden - Arcane Power cost reduced. Alabaster - Enemies slain by Ray of Frost have a chance to leave an area of ice on the ground where they die, damaging other enemies if they move through it.