The message I got simply said "-blam!- you". While in Trials of Osiris one of my teammates killed said warlock. Now while i'm watching his orb, 4th horseman in hand, he self res. Ofcourse I killed him instantly. I thought to myself why in the world would you self res while being watched by a guy with 4th horseman in hand. I meen you can plainly see the thing on my hand. Anyways apparently it made said warlock so angry he sent me that message. I responded with "not right now, i'm busy killing a stupid warlock".