Completely alright with starting in that city. I didn't want to start in Throx for that very reason. I also misinterpreted how much the crystals would affect a magic user. I imagine Esailia wanting to avoid them, then. No problem there.

The reason I wanted to use multiple elements was since the way she lived didn't force her to build up her mana pool. She uses her weapons to accent her abilities, so she can barely be on par with the length of time a normal magic user would be in terms of stamina. If forced to use her magic without her bow or swords, it would deplete her mana in either a few spells, or even in one or two, depending on which element she used. It's an intentional crutch for the fact of using more than one element. For example. If Esailia is in a prolonged fight, you wont see her shooting magic infused arrows, or swinging around her swords with elements constantly. She simply cannot cope with constant use. She relies more on planning and reflexes to get her through fights rather than her magical power. I'd be willing to bounce ideas of how Esailia can use the elements on her weapons in PM with you, if you feel they are too much. I understand you don't want anyone to be OP. Perhaps she can use two elements?

I am debating this because my character would not be the same without her ability to use the base elements. She grew up with nature. Earth, water, fire, air, being the four main ones. Earth and water grow the plants, air being self explanatory, fire has its place as well. cleansing a stretch of land, allowing a fresh start to an ecosystem. Esailia would have learned to harness these base elements in her time as a Keeper of the Wood. Even her ability to heal would be nature based than light based. Like a druid, rather than a priest.

I understand too that I am pushing something that you feel shouldn't be in the world you created. I bring up the fact that odd and amazing things happen in our world too. The man who can swim in ice water by controlling his internal body temp with meditation. The human conduit, who can conduct enough electricity to turn on lights without any bad side effects. People so flexible they can scratch behind their ear with their foot. I can imagine in a world where everyone has mana, there would be oddballs that can do strange things. But as always, I will defer to your judgement. It's YOUR world, after all.