Frozen Orb

Launches an orb of swirling ice which rapidly moves forward over 16 sec. While it is moving, every 1 sec the orb deals 156 Frost Damage and applies a Chill for 30% movement speed reduction to all enemies it passes through. The first time it damages an enemy, its movement will slow and it will have a 100% chance to trigger the Fingers of Frost rune.