most valuable chinese pokemon cards TCG Mystic&Void Iron Valiant ex CSV6C-153/128 SAR NM S-CHINESE BLADE AWAKENING MOST VALUABLE

Another possible home would be something like Mono-Black CoffersBlack Market Connections fits what the deck is trying to do by ramping and drawing cards

Being able to play Riteknife in some sort of Grixis nastiness deck or a Mardu aggro deck with the knife in the hands of anything from a Mirran Crusader to a Grateful Apparition means you only have to sac one creature to get the Riteknife party started because Proliferate will take care of the rest

Its pretty much only a value card though

They serve several important purposes: Protection: Play with valuable cards without risking damage to your originals

And for some reason, it keeps going

Its delightfully goofy while also truly capturing how it feels to play Sneak Attack