None of the cards included offer any real monetary value, but there is a code included to get both decks in Magic: The Gathering Arena for you and a friend
All the cards you find in Ravnica: Clue Edition are fully legal in Magics regular game
2/2 Illustrated by Dibujante Nocturno Standard Not Legal Alchemy Not Legal Pioneer Legal Historic Legal Modern Legal Brawl Legal Legacy Legal Comp
Unless you have lots of shuffle or a particular synergy with the Brainstorm such as miracles you are usually better off with a more self contained effect
Its condition for the creature to be tapped is a little awkward, but we can work around it
Uncut Sheet of MTG and Pokmon Test Prints Graded by CGC Cards Blasts to $275,000, Lighting Up Heritage Sale Posted on 8/21/2024 A holy grail of TCG collecting was in the spotlight on August 16, 2024, when an uncut sheet of Test Print cards from Wizards of the Coast realized $275,000 in a Heritage sale