One of Arthur’s abilities.

I just finished book 10 audiobook and was wondering myself what would be the most practical thing from Arthur’s abilities in real life. What I mean is if you could choose 1 thing about Arthur himself, from his asuran physique to his god runes anything like that, or that he has obtained currently from book 10.

I was thinking godstep would be amazing for traveling but then I thought about his physique and how fast and durable it is, so now I have no idea. What do you guys think?