Playtest cards use a modified version of game symbols, such as and . These modified symbols should be treated as the standard symbols during play.
2024-11-08
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.
Bedtime story (Don't put a lore counter on this Saga as it enters. Put a lore counter on it at the beginning of your end step rather than your main phase. Sacrifice after III.)
II — Put a flying counter on each tapped creature you control.
III — Draw a card for each creature you control that dealt combat damage to a player this turn.
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!).
and 
. These modified symbols should be treated as the standard symbols during play.