yes
no
nope
depends on the ritual, for example: if it was a pagan ritual I'd be OK with it but if it's a satanic ritual I probably wouldn't be cool with it but I like to keep an open mind
Blank verse for is c) a type of verse with no rhyme scheme but a meter in iambic pentameter.
Shakespeare often wrote in blank verse, many of his plays (if not all) were written in this type of verse.
darkness in a humans soul or just darkness in general
There are several things that distinguish heroes from monsters, especially in classical literature. Heroes and monsters are very highly contrasted through the dichotomy of good and evil. Heroes are often wholly good; monsters are often wholly evil. Being "good" entails protecting the wellbeing of others, and being "evil" means causing destruction and harm to others. They are also very starkly different in their physical appearance and personal attributes. Heroes, especially Beowulf, are bold, strong, physically fit, usually handsome, brave, wise, etc. Monsters are usually grotesque, horrifying, oversized, etc. Hope this helps.