Paladin: INFINITE duration damage buff (Patreon)

Retribution and Protection Paladins have access to an exploit which allows you to extend a damage buff to infinite duration.

You need to have the "Templar" hero talent set for this to work. When a paladin with these talents casts "Hammer Of Light" they can extend a buff called "Shake The Heavens" which casts multiple empyrean hammers at nearby enemies. Crusader Strike, Hammer of Wrath, and Blade of Justice (Retribution) and Judgment (Protection) extend the duration of Shake the Heavens by 1 second.

If you have some means to increase your haste and/or holy power generation high enough you can increase the buff faster than it decays. At some point-after you have extended it for minutes - it glitches out , and begins to increment in hours. This lasts until logout/death, and survives zone changes.

Any major source of increased haste/holy power generation can achieve this effect but it has been discovered in the wild accidentally by players in Horrific Visions, where Gift Of The Titans with its 60% haste buff seems to be glitching out, and delves-where Brann's time-lost relic is doing the same thing.

I'm still hunting for the most accessible and/or effective source of haste and power generation to use this exploit. At the moment the best option is Horrific Visions and Gift Of The Titans, this will likely change and this article may be updated.