Summer Anne & Mary

Yup of course. They're one of the best boss killers in game and are frankly better than their rider counterpart due to no end guts and by using that and reviving with one HP and their crit damage any saber bosses would just die. Sadly we've got bosses with buff removal and so I recommend giving her an extra source of guts (Like quetz which is better as it gives buster boosts or Iri's) when it's removed for some reason. All in all they're nice, but you need to plan hard and get used to having them on low health and be careful of those bosses with buff removal and possibly buff prevention.

We Will get the best 4* St np5 archer in September(maybe). If you not have any St archer right now like Robin or eurayale then yeah. personally i think she is worth it and fun to play