Keep or fodder?

Got these 3 as pity breakers and I haven’t really decided what to do with them. Any ideas or thoughts? Btw I’ve pulled two Helbindis before this, one’s chillin in my barracks (+atk -hp) and the other i fed to soren. Selkie and Yarne are new.

Helbindi is IP or GD Infantry fodder to me.

Selkie is a solid dragon duelist given her high Res as a physical unit. Built in impact is pretty cool too so you can have fun with her.

And Yarne is Atk/Spd solo and GF fodder, just ensure the target has Astra first so they can get both the Solo and Galeforce.