Currently have:
Dim Vision
Current Skill Level: 3 (Base: 1)
Radius: 4 yards
Duration 2.7 seconds
Next Level
Radius: 4.6 Yards
Duration 3.2 seconds
Is this duration incorrect? I checked D2 wiki and the base duration was listed as 7 seconds, progressing to 45 seconds at level 20. As it stands now the skill is worthless due to the extremely short duration.