Shai
Sorry to break it to you but non-donor mentalist is kinda useless. I mean I tried making one and I got roughly 400m+ HP, which won't suffice I think. But in case you still want to continue, try following xiao's comment above, though I won't recommend it. Imagine this, I got my non-donor mentalist with decent STA awakes and equips(for non-donors) and got roughly 400m+ hp and what do you think you will achieve with hybrid int/sta awakes? I'm estimating around 250m+ hp? Which is too low for pvp. Just try pure int or pure sta. With pure sta you can just depend on crucio spell. And with pure int, just use the combo, i forgot the skill name, but the one that reduces the defense and attack, and the damage per second skill, plus SB. Or aether grasp them. You really can't do much being a non-donor because majority of non-donors go for FMs which still have respectable damage being non-donor. But I don't hinder your passion for mentalist. It's still how you play the game.