Tales from Duty Finder: Some make you laugh, some make you cry. Let's vent. 2.0

[Tiramu]

On the other hand using holy and hallowed is conterproductive because you're either wasting stun or invuln.

How is it counterproductive?

Holy is WHM's AOE and is a net DPS gain over... well any other option the WHM has. The 7 second stun used when the tank has stopped is a net mitigation gain, because the beginning is the most dangerous part. There are few, if any, pulls that will require a stun after the pack has been thinned. Even if there were, the DPS loss and mitigation loss of not using Holy would work out at as a net loss.

In other words, always use Holy, its a gain no matter how you cut it.