MagicMarker

Magic Marker lets you easily classify and mark mobs simply by moving the mouse over them while pressing a modifier key. This allows incredibly fast marking of trash groups. Although not necessary for the addon to function, you can configure the priority and crowd control methods you wish to use on a per mob basis. You can also customize the marks to use for tank targets and each crowd control method. This allows for the consistent marking of targets to tank and crowd control in the raid and party situations