For example: Discover that Curse of Shadows wore off or was pushed off the debuff list, then alert the Warlocks to this fact by clicking the icon. See at a glance that you're missing AI buff and let the mages know with a click.

Features: Create different windows for different tasks, configurable for your target, yourself, or your focus. Make different masks for different situations. Missing debuffs are displayed in a space you quickly define. As debuffs are applied, the missing debuffs grow to fill the space. It makes it really obvious when one or two are missing!

How to use: Move the Catch window to the desired location by dragging with the left mouse button. Resize the Catch window by dragging with the right mouse button. Fill your master debuff and buff list by just playing the game. As you encounter buffs and debuffs, they are added to the list. Toggle which buffs or debuffs you care about by clicking Modify Mask.

Advanced feature: You can associate buffs together, because some buffs are equivalent, such as Prayer of Fortitude and Power Word: Fortitude. Toggle entire buffs by class by right clicking the checkbox.