Ive written about the gap in price that happens when you have good cards in more than one language, and I expect this to be a great example
These can be a great option for low-color decks playing in tables where restricting landsas opposed to destroying themis the preferred option
A good reason for going mono-black is that black can cover almost all bases well (except artifact destruction)
it can essentially act as a mana doubler if you have a board full of Treasure tokens, you can leverage Clue tokens, and lets not forget Thopter tokens
She is driven to slay the Primeval owl named Coro by both a dream of freeing her people from his tyranny and a personal vendetta founded in an emotional loss - as such, it felt appropriate to philosophically represent her with the colors White (community-focused) and Red (freedom-loving, emotionally-driven)
There are also obvious perks like the ability to turn the self discard into a positive thing