Unfortunately, with this being a PVP game mode, he could have very well have been talking about he couldn't wait until you died in game. If he were to say that he hopes you die in real life, then that would be a death wish. Im closing this for lack of evidence, sorry.
Thank you for the report. Unfortunately the evidence provided is insufficient. Should you gain more evidence in the future, do not hesitate to report this player(s) again. Kind regards, The Staff
