Being able to remove the notoriously annoying location The Queen's Castle, for example, could easily justify Hide Away on its own
"[Type]cycling [cost]" means "[Cost], Discard this card: Search your library for a [type] card, reveal it, put it into your hand, then shuffle." This type is usually a subtype (as in "Mountaincycling") but can be any card type, subtype, supertype, or combination thereof (as in "basic landcycling")
Aside from lacking a way to draw cards on his own, hes basically the whole package
With no cards to play, paying for a good quest or a decent challenge isnt bad at all
Dion himself could easily helm a mono-white Knights deck, offering a very flickerable token generation and evasion, with a later game ability to pump the team and even blow up a permanent
Players can also safeguard their collection with portable card portfolios, which hold 64 standard cards as well as 8 oversized cards