Burn Guard Viability post nerf
You can use it if you want just know that even with burning + condition damage maxed out your damage output will suffer quite a bit because of the + power loss.
I would suggest http://gw2skills.net/editor/?vVAQNAW7flsAhyhY3QwaIwPEHBEVeBbwJ0GAPwbe32IIDA-TFiAABA8EAAS9HuvIAepkzSlgws/QM6GuW5AhAWMHA-w
or
http://gw2skills.net/editor/?vVAQNAW7fn8cCddidDBWDB8DhlEi6aZDgEIb/6vBUe5b+rH-TFiAABws/AQq/AwTA4vLCQM6GuW5gXK5sUJIhAWMHA-w
Few things to note even with the changes burning builds only tend to work in small groups, larger ones will have so much condi clear it will be removed to fast.
Both builds cause your burn procs from justice to become AOE. This is probably the only way the staff can become an actual DPS weapon, but due to its wide arc on its AA it can become a very good one. The same is true for anything that does AOE and hits multiple times like procession of blades.
The trap variant can be especially brutal if you use it with full traps layed on a choke point that you know they will be wondering through because it can put up allot of burning & cripple in AOE.
Hope you have fun with it.