Guild Wars 2

I use to use dagger dagger ele but I’ve heard that staff is more better for pve and I would like a good build for dungeon running

Try this:
http://metabattle.com/wiki/Build:Elementalist_-_Staff

My ele main uses this build. If you’ve got the gold for the armor and runes, it’s really a great option. With food, utils, and some might stacks you can easily nuke bosses.