Saviors of Uldum Guide
Silence and destroy all minions.
Looks to me like someone wanted to put Psychic Scream back in the game and then realized "Oh shit right that card was annoying AF, better make it more expensive".
The artwork doesn't really look like a plague.
A plague doesn't necessarily have to reflect a rapidly spreading infectious disease. It can also be defined as "a thing causing trouble or irritation", or archaically, "a term used as a curse or an expression of despair or disgust"
Good to know.
wild big priests gonna be more pain in the ash