Out of boredom I used my 711 piety & 2.47s GCD gear to Glare III/Dia a dummy non-stop. I kept Assize, PoM, Lucid, and even Thin Air on cooldown.
Just your regular 1 2 1 1 1 1 1 1....

At around 10 minute mark, I had to wait about 0.5s - 1.0s to wait for lucid dream to tick just so I could go back to glare spamming. At the next PoM window, I'm completely dry without Lucid available.

Now imagine when the WHM have to dip into any of their MP-taxing heals. They'd be out of mana much sooner.

Using basically any low piety and/or fast GCD setup..? That's a death sentence for WHM.

This is an insult, to WHMs alone.