Chthonian Nightmare (Modern Horizons 3) — MTG Card Value

Which version do you have?

If you just want the card, buy the Standard: $1 version for the cheapest entry. The higher priced Standard: $2 and Standard: $6 versions offer no tangible benefit in this case, as they are all the same card from the same set. Therefore, save your money and purchase the lowest priced Standard: $1 version unless you have a specific reason to acquire a higher-priced copy.