Alucarda (1977)
The opening credits had me fooled that this would be a banger… If you look past the mediocre blocking and stilted performances and dreadful unemoted screams that account for ~50% of the runtime there's some surprisingly strong sound, costume, and set design (those bloody-bandaged nuns… that dank cthonic convent… the eldritch synth warbles and droplets…) and insane “historians say they were very close friends” lesbianism. Scene-wise there's some great stuff separated by dull crud: the wildly out-of-pocket declarations of love, the merchant's goofy-sinister patter, the prayer-powered psionic deathblast, and of course the nude vampire in the blood coffin. A film of moments rather than union. To be honest though, I'm more interested in the Satanic super-strong dog nuns/levitating cackling cat nuns the Christians tremulously recount at their flagellation session—that they never got their own film is the real injustice.