Quote Originally Posted by Ghishlain View Post
In theory and paper, it's not a terrible ability. From a healing standpoint, 30s of Fairy loss results in a loss of 2000 potency of free healing. SCH can easily make that up if all three stacks are used for Lustrate + 5 Physicks or 1 Indominitability (in a two-tank scenario) and 2 Lustrates. Anything you get past that is icing on the fairy loss. Of course there's the cost resummoning the fairy and the potential loss of Swiftcast or even more potency loss due to hard casting fairy.
That is why it is best used when you don't need healing!