Does Ravenbloom Student trigger when a spell is placed on the chain, or only when it resolves?

Ruling: Ravenbloom Student triggers when a spell resolves (is played successfully), not when it is placed on the chain.

Sequence:

• Spell resolves
• Ravenbloom triggers and is put on the chain
• Trigger resolves

Nuances:

• Placing a spell on the chain has no effect on Ravenbloom
• A card is not considered "played" until it resolves and is removed from the chain