ss can only kill once, and it makes the role appear very much akin to gf/sk with the way it's set up.
Even then, this role pretty much confirms town members until he ends up killing scum. It's a guaranteed town confirm which finishes with a scum kill. Just think about it, how isn't that overpowered? I can't even imagine having two of those in one game....
Spoiler : FM History :
FMs: XIV, XV, XVI, XVII, XVII, XVIII, XIX, XX, XXI
MFMs: XIII, XIV, XVI, XVII, XVIII, XIX, XXI, XXII
SFMs: Too many.
SFM Night 1 Death Percentage: 72%
Hosted: SFM 89, SFM 118