Here's another Cleric spell teaser, first shared in this week's blog post: Sunray!
Sunray is a tier 2 talent/spell that deals a bit more damage than guiding light and blinds the target for a few turns. Casting the spell twice in a row will upgrade the blind to a stun, but only once per enemy.
It's not going to take out enemies as consistently as a damage wand, but the ability to disable enemeis at a distance makes it quite potent as a defense or utility option.
(Image Description: A short GIF showing off the sunray spell. A skeleton approached the Cleric, but after two casts of the spell the skeleton is frozen in place. The Cleric then simply walks away.)
If the blind is guaranteed, it's great against all ranged and fast-moving mobs.