Its a good example of a card from Murders at Karlov Manor thats going to be obscene in Commander, but one thats not quite there for other formats
The same goes for selling at a convention, though there can be wait times depending on when you go and how much you have for someone to look through
Hopefully, by the time we're done, we'll have a better idea of just why these cards are so important, what decks they fight against, and why, when you are building a deck, you should be including these effects somewhere in your 75
Theyre most commonly used for casual play, playtesting, and formats like Commander or Cubeespecially when you want to try a deck before buying expensive cards (or when youd rather not shuffle your rent payment)
As a State based effect, the -1/-1 and +1/+1 counter cancel each other and are removed
Jace, Architect of Thought and Fact or Fiction gave you the choice of what cards went your hand, not your opponent, and I think that makes all the difference