Even though I have Thetis, Kerry (min-cost) and Dahlia for Valks and Sybilla, Olivie, Sherry and Sophie for lightning rods/duelists, I'm still going to go for min-cost event unit because, COME ON, WE FINALLY HAVE AN EVENT AGAIN, SO WHY NOT???

...Well, if you're busy leveling other units then there's a reason not to if you have better duelists like I do but meh, whatever, I'm just happy we'll have another event. At least get the SCs from the first few maps, and maybe one copy for harem completion purposes