Apple Bride
1.6* Skill Act, 15% Act Again. And she will be guaranteed for 150FS in June in the Bride 30FS Gacha.
Or Pincushion. She should came back in her reprint event gacha (I guess? I don't remember if 5* have increased rates too). It's two events away, expect something like 4~5 weeks.

For strong attacker with Pursuit, Cactus? Not the best but at least you already have her and she works weel with Apple Bride.
For turn 1 skill act, regular Cymbidium works I guess. Pursuit+Act Again for self.

Instead of a non reliable 80% Act Again, you can also think about Negate Damages and Retain HP. You don't mind if you activate Sigilaria turn 1 or 2 if you don't take damages.
Sickle-shaped Solomon's Seal
is clearly good. She can protect you with her 50% miss while Sigilaria is inactive, gives 2 Negate damages and x1.36 skill act.


Or even better. Use both Corbett and Sigilaria in the same team. I think Sigilaria is not a girl you build around. She is really bad to do the job by herself. It's better to make a team based on another strong girl and use her in the process.
I haven't used her yet so, I may be wrong. I'll try to do something.



Sigilaria, Plum, Corn Cockle... I know someone who saw some youtube videos