Call from the Grave

• WWizards of the Coast2024-11-08
  Official Ruling
  To choose a random creature from a random graveyard, first choose a random graveyard with at least one creature card in it. Then choose a random creature card from that graveyard.
• WWizards of the Coast2024-11-08
  Official Ruling
  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.
• WWizards of the Coast2024-11-08
  Official Ruling
  The choices of random creature and random graveyard are made as Call from the Grave resolves.
• WWizards of the Coast2024-11-08
  Official Ruling
  Playtest cards use a modified version of game symbols, such as and . These modified symbols should be treated as the standard symbols during play.
• WWizards of the Coast2024-11-08
  Official Ruling
  The amount of damage Call from the Grave deals is determined by the casting cost . . . er, mana value of the permanent that was put onto the battlefield by Call from the Grave (even if it’s not a creature at that time). In the case where no permanent was put onto the battlefield, Call from the Grave won’t deal any damage.
• WWizards of the Coast2024-11-08
  Official Ruling
  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!).

Rulings via Scryfall