Playtest cards aren’t legal for play in any tournament format other than Mystery Booster Limited formats. On the other hand, we expect they will spice up a wide variety of non-tournament games (as long as everyone’s on the same page about using them!).
For many playtest cards, you’ll need to make a generous assumption that basic game rules would be updated to allow them to work. The Mystery Booster 2 Playtest Card Notes section (reproduced here in individual Gatherer rulings) provides guidance for fitting these cards into the existing rules structure.
Playtest cards use a modified version of game symbols, such as {T} and {W}. These modified symbols should be treated as the standard symbols during play.
Magic: The Gathering · ™ & © Wizards of the Coast · Illus. Hélio Frazão
Card data via Scryfall. Rarix is fan-made; not endorsed by the rights holders.
If Vuzzle Spaceship is blocking a creature with flying, causing it to lose flying by removing counters from it won’t stop it from blocking. Similarly, once Vuzzle Spaceship’s “Lasers” ability is on the stack, removing counters from it to cause it to lose that ability won’t affect the ability on the stack.
