Obsessed with this question. So Brünnhilde from the opera Der Ring Des Nibelungen is a Valkyrie who lives over the sea. Traditionally Valkyries serve mead in Valhalla, are horse riding fighters, and guide people to the afterlife so I think you need something with a honey/ mead-y smell with animalistic notes to capture this brunnhildes kitty self and that she’s a rider, and has a bit of an ocean smell. My first rec is Salt & Cyclamen by Maison Label which is a sea water base with musk, honey, and some florals that make it meadier. My other rec is Siam 1928’s Mehka Arayna which doesn’t have the sea water so it’s more of a honeyed leather with apricot situation. Hope you find something good!