13 is the King of Wands, not the Hierophant
The King of Wands holds a blossoming wand in his hand, representing life and creativity. His throne and cape are decorated with the lion and the salamander, symbols of fire and strength. The salamanders biting their own tails represent infinity and the ongoing drive to move forward against all obstacles. His robe is bright orange like a flame, and his crown has the shape of tongues of fire.
The Hierophant is a religious figure sitting between two pillars of a sacred temple – though this temple is different to the one in which the High Priestess sits. He wears three robes – red, blue and white – and a three-tiered crown, both representing the three worlds over which he rules (the conscious, sub-conscious and super-conscious). In his left hand, he holds the Papal Cross, a triple sceptre that signifies his religious status. His right hand is raised in the position of a religious blessing, with two fingers pointing towards Heaven and two pointing down towards Earth.
I'm inclined to think that 13 could be either of those, as the cover doesn't match either. The way this will be resolved is when a future cover clearly has elements making it one or the other, leaving the alternative to 13. I am currently using the Hierophant, because monks, but there is no mention of these in the actual card requirements, nor are other details Hereno cites mentioned in the requirements for the King of Wands.