Adarkar Sentinel looks like, but with some strange, almost tribal-like markings
Balance of Judgment - A table flipping card that you learn to love and hate
It's one of the reasons milling isn't as strong, it takes longer to kill someone, and they are likely strengthened by it
Card not found was a major player in Standard for a while and has made appearances in pretty much all Constructed formats, including some play in Vintage
Because of the "different" names restriction, this is best in Highlander and Commander style formats with one-of anyway, save for basics
Basically, theyre hard to balance, like planeswalkers, except they have to do even more because they wait a turn to do it and theyre harder to interact with, all of which sounds pretty dangerous to me from a fun standpoint