Figured I'd post my Mesmer build here too. Seems Radiation Field is not one of the option to pick for utilities. I typically switch the signant around depending on what I wanna do.

Have not really put any thought into it since I hit 80, but it preforms pretty well. Just got the full CoF set (mix of Power/Vit/Condition and Power/Perc/Condition) and if I get motivated to run some more with him ill get some Superior Runes of the Nightmare from TA.