Whoops, and just yesterday I played FGO newly released Rachomon event and tactica move quickly without me?
@ghost I split Saffron and Nightmaher for 3 reasons. one is to spread firepower enough for all teams to clear their respective route in semi-hard stage like daily 800k+ stage. Next is the broken Aqua Sabouten use powerful single target attack. So just one girl with counter+dodge+provocation per team is suffice. Nightmaher in crit/nuke also allow couples of extra turn for Shiro-chan Christmas and Protea to bomb everything up as well. Shiro-chan in counter team might be out of place at a glance but together with Anemone they boost crit rate by 50% and crit damage for 80%. Saffron can breakthrough 50k+ counter damage and Anemone can bust through 150k+ per skill if lucky enough. The last is to organize team speed since Shiro-chan is much quicker than Nightmaher. Difference in speed between teams will be too great.
@myrdin I and twilight use Pillow-chan. She's the best girl in exploit weakness for rainbow team, at least until Pygmy comes in. Just like wutan said, she fit into all kind of team and setup except solar drive. In my case I use her in debuff team to provide extra edge so they can hit hard as well as take little from enemies. My setup is in last page if you want reference. But knowing you, you won't have any interested in debuff team right?