I'm gonna hop on and test it out, I'll give you the code once done.
EDIT:/// Well all I did to make mine work was: /powa, clicked 'New', picked an image - change the size, etc. - then type verbatim the name of the buff, toggled 'Resting' by double clicking the box and then closed the config window, pushed test and it worked, pushed test again to remove, closed the power auras window and started hittin' on the test dummy thing it procs correctly, I use the ability that makes it go away and it goes away, then comes right back like normal.
Here's a basic export/import for it:
Code:
gcd:bofalse; b:nu0.9843137254902; anim1:nu1; g:nu0.67058823529412; optunitn:bofalse; ignoremaj:botrue; stacksLower:nu0; target:bofalse; icon:stInterface\Icons\INV_Sword_122; size:nu0.70999997854233; torsion:nu1; r:nu0.49411764705882; y:nu53; x:nu0; customname:st; groupany:botrue; isAlive:botrue; timerduration:nu0; unitn:st; bufftype:nu1; stacks:nu0; focus:bofalse; raid:bofalse; texture:nu45; DurationExpired:bofalse; alpha:nu0.75; aurastext:st; symetrie:nu0; soundfile:st; owntex:bofalse; isResting:nu0; duration:nu0; mine:bofalse; multiids:st; inVehicle:bofalse; speed:nu1; sound:nu0; TimeShown:nu0; stacksOperator:st>=; realaura:nu1; threshold:nu50; exact:bofalse; textaura:bofalse; StackCount:nu0; wowtex:botrue; groupOrSelf:bofalse; customsound:st; combat:nu0; InactiveDueToState:bofalse; inParty:nu0; tooltipCheck:st; aurastextfont:nu1; id:nu1; HideRequest:bofalse; Active:bofalse; customtex:bofalse; spec1:botrue; isSecondary:bofalse; thresholdinvert:bofalse; stance:nu10; inRaid:nu0; spec2:botrue; Showing:bofalse; anim2:nu0; buffname:stKilling Machine; begin:nu0; off:bofalse; texmode:nu1; inverse:bofalse; ismounted:bofalse; targetfriend:bofalse; party:bofalse; randomcolor:bofalse; finish:nu1