The thing with vengeance buff is that it is possible to destroy so to deny other people getting the contribution from the stacks. Every time I tried to get to it I would find that WhiteWingBow had destroyed it that or Melody’s AOE would kill me as i tried to get past them. My computer is very poor at handling Boruta so it is very hard to see what is going on when near Boruta which vengeance spawns by.
Blue orbs are echoes. Purple rings are an explosion. Purple clouds are explosions that chase a character so sort of fun to chase into a bunch of afk people.