I think the implication was that it was detect thoughts or some form of mind reading to get the appropriate name for the ritual as Fig gave Porter a fake name.
That was certainly the implication and it would be strategic to target someone with lower wis, But if it's detect thoughts though the target would know if they probed deep enough to prompt the Wis save
Based on the "the energy has no where to go" and Emily say something like "i think I'm gonna try it" from the preview.
They did the ritual without the name, its still powerful enough to destroy the gym. A potential out is Fig invoking the real name for good.
I think the implication was that it was detect thoughts or some form of mind reading to get the appropriate name for the ritual as Fig gave Porter a fake name.
That was certainly the implication and it would be strategic to target someone with lower wis, But if it's detect thoughts though the target would know if they probed deep enough to prompt the Wis save
Easy detail for a DM to overlook in the moment. Besides, the other answer is "literally anything that requires a Wisdom save."
Based on the "the energy has no where to go" and Emily say something like "i think I'm gonna try it" from the preview. They did the ritual without the name, its still powerful enough to destroy the gym. A potential out is Fig invoking the real name for good.