He can generate lightning. And start earthquakes, apparently, but if you get a good enough hit on him it's easy to get him to stop.

[ Spoken with the even keel of someone who's experienced it firsthand and knows exactly what he's talking about.

Although... ]

Considering what he tried to do to the Regent before, that probably isn't all he can do.

He's inexperienced, though. He killed an Achamite guard in Godsblood, and that fucked him up enough that he made himself an easy target. Either he's grown up real fast since then, or you can use that.

[ The tone of Amos' voice indicates that he's willing to bet it's more the latter than the former. ]

Should probably just try killing him and bringing his shard back here. That'd be easiest.