GuarmAssist

Install and ready to go.

When fighting against mythic Guarm, it shows the three players affected by Foam along with their Breath debuff color. Also sorts them by name so dispellers can be assigned easily.

Type "/guarm" to see available options. Use "/guarm move" to move the frame around.

Take a look at this video to see what this addon looks like ingame.

Uses LibGroupInSpecT (BSD License)