As a card, it's natural to associate Enraptured with spell recharging. But I actually don't think that's where this card shines. The problem is that to trigger the effect, you have to succeed on an investigation attempt. Mystics, the people who could do with some extra spell charges, do poke around for clues reasonably often. BUT, when they do, they usually test Will instead of Lore, thanks to an asset like Rite of Seeking or Sixth Sense or perhaps the upcoming Clairvoyance. Enraptured, meanwhile, only has a lore icon, which doesn't help in any of those cases. You sort of have to go out of your way to trigger it, maybe by taking a basic investigate action with a small boost when you're all set up to take a buffed investigate action from an asset.
But that's not to say the card is a dud! See that tome on the dude's lap? Could it be the nice translation of the The Necronomicon? Has our starry-eyed dreamer been dipping into some Pnakotic Manuscripts? Does he enjoy updated versions of old classics? My point is: there are quite a few powerful tomes that use secrets. Most of these are in the seeker class, which means that the ideal taker of Enraptured, in my view, is a tome-loving seeker -- Daisy, basically, though Amanda and Mandy might take a gander at Enraptured as well. Amanda could potentially trigger it three times on a turn, and pump her Pnakotic manuscripts like a pair of old-school reeboks!