Sevren either
Wants someone to think he's 100% human
Or wants someone to think he's 100% a god
He doesn't want them to know he's a human merged with a god fragment. That makes him more vulnerable than either of those. As a human, he can be underestimated, as a god, he can come across as too powerful to have a weakness.
Said weakness rambling:
Sevren plays a dangerous game with his time magic. If he uses too much of it, he can get a little too close to Zalelaus despite not having his heart anymore.
At first, it's not a huge deal. He'll just be in a pretty bad mood until he's recovered. But it's a sliding scale, with the worst of it leaving him acting no different than a terrified snake as his powers do as they please, which is very dangerous. It's a radius of time shifting, and portals opening. With anyone who enters with any sign of hostility being basically aged to death. None of this is within his control at this point.
If he carries on like that, he will eventually transform into his Astral snake form which will shift reality itself.














