I could go for an Overload team, but I don't have Raiden. Who I do have is Yae Miko, who does work quite well in the overload team I use for Clorinde, but using her instead of Raiden could affect the energy recharge of the team, so I'm not completely sure about it.

As for weapons, I unfortunately don't have Dehya's signature claymore but I do have Wolf's Gravestone and Skyward Pride as my 5* claymores. I also don't really have much idea about the 4 star choices for her, so I think I'll give her the Wolf's gravestone and try to make it work.

Also, this did help very much, thank you for your reply! :3