http://img704.imageshack.us/img704/1933/traumag.jpg

Fountain of Light is the Trauma proc. It does not currently scale with SP, accounted for 25k of my 1.99 million healing on this attempt.

Logs: http://www.worldoflogs.com/reports/k2fmbuv2s7lnyokl/

All Festergut attempts were done with Trauma enchanted and equipped.

Estimates of Bryntroll at 8 to 10% of dps seem exaggerated to us. Something at the 3 to 3.5% seems more typical. It should be eminently possible for healers to get 3 to 3.5% healing out of Trauma.

Trauma heavily favors casting as many spells as you can, so it might very well benefit say Resto druids, Holy priests and HL (glyphed) paladins more so than Resto shammies, Disc priests or FoL paladins.

There is a known bug where Bryntroll can proc too often for Ret paladins and DKs. I would compare other weapon procs to warriors using Bryntroll at the moment, which is closer to the ~3% I mentioned above.