Cristina was the Goddess of Profound Magic and she was also the top combatant below the Supreme Goddesses. Just like Bushiki had mastered several types of weapons, she had also mastered various kinds of magic.
The opponent she was facing against did have some advantages against her as she was the Elemental Queen with immunity against any and all elemental attacks. The main damage dealing process for a magic caster is mostly elemental damage so she being immune to it was definitely a great advantage.
Elemental Queen's main damage dealing technique was also elemental magic but as the Goddess who rules over magic, hurting her using the same was almost impossible. But as a queen, the Elemental Queen could obviously create elementals to use them against Cristina.
