I'm a little surprised that no one has commented on this card yet as of 12/2/2023. It has a pretty solid 1-for-1 cost on Willpower to start, which certainly isn't amazing but makes me want to read on to the game text. It cannot chump block, which is a downside for sure. It's the ability that makes the card, though it's very niche. The kind of deck that wants Messenger Raven is one that's running scry effects like Imladris Stargazer, Gildor Inglorion, or Wizard Pipe. Hero Gandalf is moderately popular and since Vilya is one of the strongest cards in the game and pairs so well with scrying, there should be quite a few players running this kind of deck. On the other hand, Vilya always comes with Elrond so must be played alongside for the Messenger Raven (but is likely already added for Steward of Gondor and the raven is thus automatically available). In such a deck, the raven becomes essentially the ability of Gildor Inglorion (spend a buck to draw a card) and makes for a lovely resource dump for extra money.