I’m guessing this was mentioned in the creation thread but the Arraki team listed 11 swords.
1-the twilight blade
2-mercy
3-vermilion
4-the red sword of war
5-colony
6-the black bone of amduant
7-seducer
8-pogg ur-pogg
9-purity
10-alluvium
11-muramasa
I’m guessing that is on purpose and not an editorial error. I wonder is this is how we get a 10th Krakoan and maybe even how the sword station comes into play?