The main function of Baldur's Gate 3's thaumaturgy is to manifest a emblem of supernatural power. If you are in an intimidating state during battle, you can gain a certain advantage. Overall, it is quite good.
A: Manifest a sigil of supernatural power that gives you advantage on Intimidate and Perform checks.
It can be said that although this spell is useful, its range of use is not very wide.
In terms of attribute identification, it is still relatively rare. Use the obtained intimidation and performance identification to gain advantages.
Players can use it according to their own situation, and overall it is a pretty good spell.
On top of it, you can have a strange priest with some charm, which is quite good when used.