Quelling strikes -> how does it exactly work?

[lyndwyrm]

The dead walk among us! Run for your lives!

Jokes aside, i think what that person was saying is that you shouldnt recast buffed DoTs until they expire. When you apply a DoT, the game snapshots your current buffs so that if a buff expires before the DoT does then the DoT remains at the strength it was cast at. When you re-apply the DoT the game rechecks your buffs, and you might lose some strength off it if you reapply too soon. So the person you quoted was probly advising letting a buffed DoT expire before reapplying to assure full strength all the way through. Probly. Its also possible some mechanics have changed in the 2 and a half years since that post.

It was also true at 2.0 until some point (I'm having trouble finding the patch/hotifx in particular) that you could not overwrite DoTs with a weaker version of the DoT, which would include buffs like Quelling Strikes. Now however, you totally can. So the statement

also, you cannot overwrite DoTs cast under buffs that strengthen them

is just outdated.