Wow, I must have got lucky.
My Mercenary is at lvl 49 so I gave this a try. Got nothing for 2 hours, then got a plug and a demol within about 5 minutes. Got another plug about a half hour after that. I think I may have been killing 50-55 per hour with fly time between them and pausing for buffs.
Now watch me not get another one for a week.
