If someone plays a spell with Ravenbloom on the field and the spell is countered, does Ravenbloom gain +1?

Ruling: No, Ravenbloom does not gain +1 if the spell is countered. A spell only counts as being "played" when it resolves, not when it is cast. If a spell is countered, it does not resolve and therefore does not trigger "when played" abilities.

Sequence:

• A spell is cast/declared
• If the spell resolves, it is considered "played" and triggers any "when played" abilities
• If the spell is countered before resolution, it is not considered "played" and does not trigger "when played" abilities

Nuances:

• Some triggered abilities have different trigger conditions (not "when played") and can trigger even if a card is countered
• This applies to other "when played" triggers like Lux's card draw - if the spell is countered, Lux does not draw