New South Wales
The source card Baconus the Butcher allows the caster to
Heal 1 HP for each Creature in play.
Is a creature considered "in play" before, or only after, a spell has resolved?
The wording in the rulebook is a bit ambiguous on this, as the section on placing your spell tells you to
play all the Components of a Spell face down into the play area directly in front of him or her
You are playing the cards, and you are placing them in the play area, but until they are revealed you can't actually know how many face down creatures there are.