Imrahil also works great with Silvan, in a Galadriel & Eomer deck.

Would you mind posting a deck list or general plan for the deck, that sounds like an interesting concept

Edit: oh I'm stupid you already posted it.

Since ally Glorfindel can be played from your discard pile, there's nothing stopping you from discarding him to "To the Sea!" to reduce his own cost when you play him from the discard pile. It's a pretty funny trick.