Why I love being my shaman this week. Totem is so good, it negated about 95 percent of all dispels with a GCD, the other 5 percent you can cover extremely easily or just one extra dispeller.
And agreed from above. Depending on the healer class you can easily also prepared. Holy Priests for example are also extremely good, for you can dispel one and serenity the second and 99 percent it will finish it without u having to worry about it.