The first 5* available for Summer 3 , an AoE Arts looper with a battery. Any good?
Yes, if you have the right supports and/or are lucky enough to get her to NP2+
This is a wonderful look into her NP spam/refund potential:
Napoleon and maybe even Ishtar have better team-support among the 5*; Tesla and Gil have better NP damage in many nodes thanks to their bonus against most Servants; all 4 have/will have NP interludes to boost their damage over hers.
If she got an NP interlude to boost damage/apply “Waterside” trait to herself for 3T, she’d rocket up in my opinion. As is, I have many great Arts supports so I know I’ll be trying hard for her.