Does Ravenbloom Student trigger when you play a spell, or does the spell need to resolve first?

Ruling: In Riftbound, a card is not considered "played" until it resolves. If a spell is countered or otherwise prevented from resolving, it was not played and does not trigger abilities that trigger on playing cards.

Nuances:

• This rule may be counterintuitive to players familiar with other card games where "playing" and "resolving" are separate events
• The relevant rule text was added in version 1.1 of the rules, so players using older versions may not find this clarification