You have Arwen Undómiel but need support.
Look for Grey Havens Navigator or Chance-Met Elves.
Scry rewards before narrow scry filler. Scry does not draw a card. Do not mistake a pile of small scry spells for extra cards or a complete creature curve.
You already have Arwen Undómiel.
Consider Grey Havens Navigator if it fills a useful job.
Flash in Navigator to scry two. Arwen adds one counter to a creature; it is one scry event even though you looked at two cards.
The support is missing
Take castable creatures and answers. If the engine never arrives, use the good cards rather than forcing narrow support.