Random Priests nowadays are really getting bad. Some expect to be carried through the whole dungeon. And some claim its hard to support and help with the damage in Mino Nest.
I made a level 24 priest, did Minotaur's Nest with it 7 times today, only died twice. After doing it these 7 times, I find that every random priest I partied with need to quit and make new chars. Priests can in fact dps AND support at the same time. As long as you have potions or a big enough MP pool. Lightning Relic does tremendous damage agaist the final boss due to his size. He was taking 4xx - 5xx dmg every lightning relic burst. Its annoying because normally, most priests barely attack and heal. Its not that big of a strain on your MP to do both. You should be stacking Int anyways so you should have a decent pool to use.
Without the epic earrings I still have 16k MP, more then enough to deal with Mino Nest, and this is with green armor and blue weapons. Some of the Priests I partied with had Blues and Epics.
To Sum it up for those who didn't want to read it all
.Made a Priest to see how hard it is to "support" in mino nest
.Found that people are really just being lazy
.Found that priests can in fact be a major damage dealer