Battling Cardes the Malevolent is something that should not be taken lightly. It is a trial that every Summoner should overcome.
And with that, Great Lucius has agreed to help you by calling Shera, Semira, Darvanshel, Nalmika, Luther, Faris, Esna and Melchio in the Rare Summon.
Enjoy their 4* and 5* increased rates from February 2, 08:00 PST to February 4, 06:59 PST.
For more details, refer here.