Ash magic combo

I currently have ash magic as my first, I am not changing this.

I’m thinking of going for either Mage or Paladin

Either way, I need to know which is the best option for my second magic. Especially between Fire and Magma.

I believe strongly that is magma, because of it’s heavy damage and great attack size, despite it being slow.

It’s very good specialy for choosing a second magic, considering that you might be with less skills.