mtg you may play cards from your graveyard Rules Text: Instant, graveyard, play, 30 Legal in Standard, Rules Text:

However, other effects that reference the permanent (including effects with unlimited duration) can affect the permanent when it returns to play

This is handy if you're trying to figure out what the card is, as well

Show the card to your opponents and set the card face-down in front of you to form your Inkwell

But its core mechanics remain the same

However fair this card was intended to be, merciless deck builders know the true puzzle here is how to make your opponents choice irrelevant

While they're both situational tools that may not be useful in every matchup , they have enough potential to warrent a spot in the deck