The Convention Edition packs of the Mystery Booster contain a pretend "playtest card". They are referred to as test cards on the cards themselves. The test cards feature black and white card faces that look like they have been stickered on cards with a regular card frame of the appropriate color. The card names are pretended funny placeholders, and the cards lack Collector numbers and artist credits (the "temporary" illustrations are created by various R&D members).
Test cards are not meant for Constructed play, but may be used in Chaos Draft. There is a total of 121 test cards. Test cards are not considered to be real cards, not even considered silver-bordered. They were more meant as entertainment than as game pieces.
The test cards haven't undergone rules scrutiny, and Play Design hasn't tested them rigorously for balance. The cards in the set are. Five Kids in a Trenchcoat. Bear with Set's Mechanic.
How to Keep an Izzet Mage Busy. Smelt // Herd // Saw.The item "Complete Set Mystery booster test cards all 121 MTG Magic the gathering" is in sale since Friday, December 13, 2019. This item is in the category "Toys & Hobbies\Collectible Card Games\Magic\ The Gathering\MTG Complete Sets". The seller is "zulu676" and is located in Bothell, Washington. This item can be shipped to United States, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, Sweden, South Korea, Indonesia, South africa, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, Mexico, New Zealand, Singapore, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Bahrain, Croatia, Malaysia, Chile, Colombia, Panama, Jamaica, Cambodia, Uruguay, Barbados, Bangladesh, Bermuda, Brunei darussalam, Bolivia, Egypt, French guiana, Guernsey, Gibraltar, Guadeloupe, Iceland, Jersey, Jordan, Cayman islands, Liechtenstein, Sri lanka, Luxembourg, Monaco, Macao, Martinique, Maldives, Nicaragua, Oman, Pakistan, Paraguay, Reunion.