User blog comment:Koishi-Komeiji/Hinano Miyako/@comment-4802891-20190901055131

If she wasn't a Caster she would be the perfect friend for my Serenity. Actually she can still be if my darling is used as her support. Shuten would fit in well there too but, for ONCE we have a Quick Caster AND it's a demerit to the other poison Servants who are all Arts or Buster lol. Would that be *too* balanced or still ok? That said, they can still benefit from this for the crits and DOT doesn't care for card types. Nevermind (?) lol

A very niche Servant, with Stun as a good extra for stalling (again, perfect with Serenity and Shuten), but I'm sure the more experimental players can get mileage from her^^ I would try it myself actually. I'm not much of a mad scientist (I now realize how fitting what I just said above is) but I tried a Serenity + Shuten run on Mammoth Ivan back in Anastasia and it was pretty satisfying!