World of Warcraft's addons have been an essential part of the game for a long time now. Almost no one plays the game without addon's to help them. Here are a few addon's that can be a huge help.
Deadly Boss Mods or BigWigs
These two addons are a huge part of the raiding side of World of Warcraft but also help a ton with Mythic+s. They keep track of enemy abilities and when they are going to use them, giving you a nice little countdown timer and sometimes a sound clip to tell you what is going on. Typically no one used both but having one is crucial for fights you are not super comfortable with.
Weakauras allows you or others to create specialized timers, icons and text to let you know important information. This can let you know what offensive or defensive class abilities are coming off cooldown, or keep track of your entire raid's externals, raid healing or utility. The possibilities are massive.
Healbot or Vuhdo (For healing)
These addons allow you to customize your healing frames much better than the base UI. Allowing you to easily create macros and see your party or raid's health. Makes healing much, much easier than using the base UI.
Raiderio Mythic+ and Raiding
This is more for joining and creating groups. This allows you to see the raiderio score and raid progress of any player that you mouse over. This can be very helpful for seeing player's experience in dungeons or raids.
Angry Keystones (Mythic+)
This addon shows you how many forces each enemy in a dungeon is worth as well as giving you a more detailed timer in mythic+s. This can be very helpful for knowing how many more mobs you need for 100% enemy forces.
Method Dungeon Tools (Mythic+)
This addons allows you to see a map of each dungeon along with every mob and amount of forces they are worth. It also allows you to create paths that you want to take, allowing every player in your group to know exactly where you will be going and what you will be killing. This can be very useful for higher keys when you want to get exactly 100% or just want everyone to be on the same page.
There are tons more addons out there but these are some of the more helpful ones. Hopefully some of these were useful if you were not using them already.
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