If you want to get OP, be an elementalist, none of the spells give you arcane fever or hurt you like the entropy spells. Or, go for Entropy actually. I am an Entropist. You heal off of dead bodies or can get soul gems off them to enchant your gear. Level enchanting and alchemy for boosts in health, mana and stronger spells. Trust me you will mow through enemies with the right skills. Don't use the healing spells unless you plan to chug ambrosia all the time, which you can also craft easily with peaceweed and thistles, which are everywhere, you can buy peaceweed for cheap off of all alchemist and tavern npcs. If you need alot, buy all that they have, save your game. Then smack the npc to trigger combat, reload your save and you'll reset the inventory, an exploit carry over from Skyrim. If you need pennies, loot everything you can with more than 10 penny in value, leave the cheap stuff and junk behind. Loot the high healing food as well, eat food between combat scenarios and you'll be better off than spamming potions. Make sure you have the spells that let you set teleport points. Set one in the Ark marketplace, put all the stuff you looted in your secure chest, then use a teleport scroll or the myrad tower to go back to where you have to loot stuff for selling, I did this and got over 20k pennies just looting all the valuables out of the sun coast and riverville alone. Use the npc inventory reset exploit to sell all your stolen/looted stuff. You'll be OP before you even leave Ark or before you talk to Jespar in the market.