Ok, I made some bigger changes:
* changed the name of the Priest to Fading Elder
* decreased the costs of both versions by 2
* decreased the ability costs of the cultist by 1
* increased the attack of the cultist by 1
* the priest gained +1|+1
* removed the part of the ability where it changes the element of the creature to Darkness
Any opinions or suggestions to the changes or the card?