If anyone familiar with the show Grimm can provide better context from the show itself, and not have this written as if this was actually involving the trope page reader him/herself, have at it:
So you're a high-level Reaper who thinks Portland's newly active Grimm isn't a problem, and that those two assassins you sent after him are going to easily get rid of him? "Next time, send your best". And just what are you going to do with those two heads you just got in the mail?
If anyone familiar with the show Grimm can provide better context from the show itself, and not have this written as if this was actually involving the trope page reader him/herself, have at it: