[Verenity]

I would consider it useful in certain situations, as others have said. When I leveled my twink shammy it was an extremely useful tool to finish off mobs when you have 6+ root/rotting and didn't want to cast another root/epic click. Also extremely useful against higher level summoning mobs as Triangle (Svenn I believe?) has stated. It won't make or break your shaman, really more of a convenience tool than anything else, especially before torpor makes your high mana costs DoTs more worthwhile.