Long Arm of the Law

Long Arm of the Law is a passive skill, unlocked at level 45.

Note that the increased duration (usually from 5 to 10 seconds, 3 to 8 in some cases) applies to the basic active effect, as well as rune effects. However, the following rune effects with fixed duration are unaffected by this skill: Even with these runes, the normal active effect is prolonged as usual.
 * Laws of Valor: Frozen in Terror
 * Laws of Hope: Wings of Angels, Eternal Hope

Trivia

 * "Long arm of the law" is an idiom that refers to the idea of punishment being inevitable. It is also a Paladin passive skill in World of Warcraft.