I searched in guild wars 2 for what could be the best possible instant burst build in sPvP that could possibly 1 shot any target it hits. After extended search and trial / error with innumerable builds, I found that this build, which I call arcane lightning, on the elementalist does just this. It has an instantaneous output of 31.7k damage to a target, while CC-ing them and teleporting to them.
Tl;Dr: Must try this build. It one-shots most players.
Let me know what you think!!
The Brief Video Guide: http://www.youtube.com/watch?v=M9V1qwMsUr0