Whenever there is a hero whose ability requires paying resources, said ability better be worth it. And, in the case of Prince Imrahil, it certainly is, even if it then also requires a lot of commitment during deck construction, since you need enough allies to ensure that you won't whiff often.
His traits are extremely common, meaning he has many, many decent targets with Envoy of Pelargir, Boromir, Glorfindel and especially Beorn among the standouts. In addition to that, attachments like Nor am I a Stranger or Elf-friend can further open up his target-pool, with Silvans profiting especially due to their powerful enter-play effects.
As a hero beyond his fantastic ability however, Prince Imrahil excites me much less. Having a steep starting threat cost, stats that can be described as all-over-the-place and no built in readying is not really ideal. Even his attack is somewhat limited, being neither ranged nor easily increasable, with no weapon setting up an effective +2 (in most cases) for 1 resource by itself (a noticeable difference to say Dagger of Westernesse on Merry or Rivendell Blade on Legolas). He can be equipped with the likes of Gondorian Shield or The Red Arrow, but I overall consider him pretty middling with a great ability and a subpar stat-line.
Rating: 5.5/10
Decks of mine using Prince Imrahil