Going for the Harbinger of Doom Dark Ops can feel like a trap at first, because “100 kills in one scorestreak” sounds easy until you watch every streak run out at 40 or 60. If you want a clean setup run (or just somewhere to test your timings), stuff like CoD BO7 Bot Lobby can help you get your hands steady, then you can take the same rhythm into real rounds where the card actually...