-Question about 'INT" and Element

[Alise]

-Does this status has any useful to Thaumaturge? I heard from a friends that THM only need pie, and their spell rely on pie alone?

-How to calculate elemental weakness as THM?
if you are fighting with Fire, Wind, Thunder => use Umbral? and if you are fighting with Water, Earth, Ice => use Astral? I try to test them today, but they kidda so similar damage whether I use Astral spell or Umbral spell...