This is a newer addon that I just started using a few weeks ago. It’s called GSE: Gnome Sequencer Enhanced, and what it does is allow you to create advanced macros in world of warcraft. To quote the description:

GSE allows you create a sequence of macros to be executed at the push of a button.  Like a /castsequence macro, it cycles through a series of commands when the button is pushed. However, unlike castsequence, it uses macro text for the commands instead of spells, and it advances every time the button is pushed instead of stopping when it can’t cast something. This means if a spell is on cooldown and you push the button it will continue to the next item in the list with each press until it reaches the end and starts over. It comes with an editor and everything you need to get started.

I’ve been using it in some lazy situations where hitting just one button is an optimal situation for me – like when I’m using my monk to farm dungeons. I bound a hotkey to my mouse button 4 (I use a Razer Deathadder mouse so I don’t have a lot of extra buttons) and when I hold it down, it will spam the number 1 from my hotbar. In the case of my monk, that’s a macro of attacks. In specific, this macro:

Sequences[‘WW_ST’] = {
— This Sequence was exported from GSE 2.2.03.
  Author=“Flashgreer”,
  SpecID=269,
  Talents = “3,X,3,X,X,3,2”,
  Help = [[Set the Boss/Targeting dummy as your focus, to make sure you use touch of death. If Chi starved let go of macro for a sec, the resume.]],
  Default=1,
  Raid=2,
  PVP=3,
  Dungeon=2,
  Heroic=2,
  Mythic=2,
  MacroVersions = {
    [1] = {
      StepFunction = “Sequential”,
      KeyPress={
        “/cast [combat,nochanneling,talent:7/3] Serenity”,
      },
      PreMacro={
      },
        “/cast [nochanneling,combat,talent:7/2] Whirling Dragon Punch”,
        “/castsequence [nochanneling] reset=combat/1  Tiger Palm, Rising Sun Kick”,
        “/castsequence [combat,nochanneling] reset=combat/1  Tiger Palm, Fists of Fury”,
        “/castsequence [nochanneling] reset=combat/1  Tiger Palm, Strike of the Windlord”,
        “/cast [combat,nochanneling,talent:1/1] Chi Burst”,
        “/cast [combat,nochanneling,talent:1/3] Chi Wave”,
        “/castsequence [nochanneling] reset=combat/1  Tiger Palm, Blackout Kick”,
        “/cast [combat,nochanneling,talent:6/1] Rushing Jade Wind”,
        “/cast [combat,nochanneling,talent:4/3] Leg Sweep”,
      PostMacro={
      },
      KeyRelease={
        “/cast [combat,nochanneling,notalent:7/3] Storm, Earth, and Fire”,
        “/cast [@focus, exists, harm, nodead][@boss1, harm, nodead][nochanneling] Touch of Death”,
        “/cast [combat,nochanneling, talent:6/2] Invoke Xuen, the White Tiger”,
      },
    },
    [2] = {
      StepFunction = “Sequential”,
      KeyPress={
        “/cast [combat,nochanneling,talent:7/3] Serenity”,
      },
      PreMacro={
      },
        “/cast [combat,nochanneling,talent:7/2] Whirling Dragon Punch”,
        “/castsequence [nochanneling] reset=combat/1  Tiger Palm, Rising Sun Kick”,
        “/castsequence [combat,nochanneling] reset=combat/1  Tiger Palm, Fists of Fury”,
        “/castsequence [nochanneling] reset=combat/1  Tiger Palm, Strike of the Windlord”,
        “/cast [combat,nochanneling,talent:1/1] Chi Burst”,
        “/cast [combat,nochanneling,talent:1/3] Chi Wave”,
        “/castsequence [nochanneling] reset=combat/1  Tiger Palm, Blackout Kick”,
        “/cast [combat,nochanneling,talent:6/1] Rushing Jade Wind”,
      PostMacro={
      },
      KeyRelease={
        “/cast [combat,nochanneling,notalent:7/3] Storm, Earth, and Fire”,
        “/cast [@focus, exists, harm, nodead][@boss1,exists, harm, nodead][nochanneling] Touch of Death”,
        “/cast [combat,nochanneling, talent:6/2] Invoke Xuen, the White Tiger”,
      },
    },
    [3] = {
      StepFunction = “Sequential”,
      KeyPress={
        “/cast [combat,nochanneling,talent:7/3] Serenity”,
      },
      PreMacro={
      },
        “/cast [combat,nochanneling,talent:7/2] Whirling Dragon Punch”,
        “/castsequence [nochanneling] reset=combat/1  Tiger Palm, Rising Sun Kick”,
        “/castsequence [combat,nochanneling] reset=combat/1  Tiger Palm, Fists of Fury”,
        “/castsequence [nochanneling] reset=combat/1  Tiger Palm, Strike of the Windlord”,
        “/cast [combat,nochanneling,talent:1/1] Chi Burst”,
        “/cast [combat,nochanneling,talent:1/3] Chi Wave”,
        “/castsequence [nochanneling] reset=combat/1  Tiger Palm, Blackout Kick, Disable”,
        “/cast [combat,nochanneling,talent:6/1] Rushing Jade Wind”,
        “/cast [combat,nochanneling,talent:4/3] Leg Sweep”,
      PostMacro={
      },
      KeyRelease={
        “/cast [combat,nochanneling,notalent:7/3] Storm, Earth, and Fire”,
        “/cast [nochanneling] Touch of Death”,
        “/cast [combat,nochanneling, talent:6/2] Invoke Xuen, the White Tiger”,
      },
    },
  },
}
Now that might look like a whole lot of goop, but it tells me everything I need to know about the macro, including things like who created it and what talents I should have in order to perform the macro properly. Once I have the macro imported in-game, I place the icon on whatever spot on my hotbar, and then when I’m running through the dungeon I hold down my mouse button to trigger it continuously.
Macros like these are completely situational, and you have to know their limits. It’s not good for emergency situations, and it won’t keep you safe. It is great when you’re just looking to mindlessly grind away at mobs without any thought. There are all sorts of different types of macros for all classes, including macros that allow you to use toys like the loot-a-rang (aoe looting at the touch of a button instead of having to click the dead mobs) and mother’s knife, a skinning item from Legion. I look at these macros as a QOL (quality of life) change to my game play. They’re not essential and they don’t teach you very much about your class or how to play but they will allow you a bit of a breather during the more relaxing times.
I honestly have not tried the macros with any of my other characters besides my monk as she’s doing all of my farming these days, but if you have experience with GSE please feel free to leave a comment below!
As always, happy gaming no matter where you find yourself!