Even though I won't open the 1:1 one ring, I'd personally go with The Lord of The Rings: Tales of Middle-Earth collector boosters if I could find them
Elia Benett Set Number 85 Language Espaol Legal Formats Alchemy, Brawl, Commander, Competitive Brawl, Historic, Legacy, Modern, Pioneer, Standard, Timeless, Vintage Rulings (6/6/2025) The cost reduction applies only to generic mana in the total cost of blue spells you cast
The spell you cast doesn't need to be among the cards milled with Saruman's trigger, so you can set things up with mill spells like Ruin Crab and Mesmeric Orb
These had lower prices and lower power levels but were a very accessible way to get into the format or take advantage of the cards in the decks to start building around an archetype you like
The controller can then put any number of those cards into their graveyard, and the rest on top of their library in any order
Here are some of these desirable, shiny cards