If you have the glyph that heals proplr for 3% of their health you can spam dispel magic on them even if they dont have a magic debuff on them. Currently in ICC raiding so i cant experiment with it right now. But its an instant heal for 3% of someones hp, npt that bad =D
Also found out that i can spam cure disease, it doesnt help me anything but perhaps it will helt someone else in some way :P