Their summons is acting like their true body, so they can use all of their divine abilities and ultimate abilities with it. Even if they want to pretend to only have the pathway of telepathy, they can still use their Roaming divine ability to create many virtual bodies and virtual copies of their mind to overcome the god of knowledge.
Using this move shouldn't cost them anything. But they didn't do it because they could sense immense danger around them.
To them, it felt as if everything around them was dangerous to them. It felt as if the whole world was one large trap.
This shouldn't be the case because their current body was supposed to be a summons created from their past forms, so if it fails, the person who should suffer is the god of history.
But for some reason, Legion could sense a danger to their true body in the Mindscape. So they decided to hold back.
