However, if WotC never reprints these cards, the prices will never go down, so I think it's completely fine to buy proxies for casual use

Ascendant Spirit Baboon Spirit Benevolent Geist Cemetery Illuminator Chisei, Heart of Oceans Cloudhoof Kirin Cosmos Charger Deadeye Navigator Dreamborn Muse Dreamshackle Geist Dungeon Geists Ethereal Investigator Extravagant Spirit Final-Word Phantom Ghostly Pilferer Hunted Phantasm Kairi, the Swirling Sky Kami of the Crescent Moon Keiga, the Tide Star Kira, Great Glass-Spinner Lone Revenant Mausoleum Wanderer Mindshrieker Mirror-Mad Phantasm Mirrorhall Mimic Myojin of Cryptic Dreams Myojin of Seeing Winds Niblis of Frost Patrician Geist Patron of the Moon Rattlechains Sage of the Beyond Shacklegeist Sibilant Spirit Soramaro, First to Dream Spectral Adversary Spectral Arcanist Sturmgeist Supreme Phantom The Unspeakable Timin, Youthful Geist Tomorrow, Azami's Familiar Tradewind Rider Troublesome Spirit Tui and La, Moon and Ocean Wan Shi Tong, All-Knowing Wan Shi Tong, Librarian Yue, the Moon Spirit
Some card effects affect your ability to play lands
Ill once again hop on the hype train for Boros blink
Its a great balance of power without being obnoxiously strong
And thanks to Enduring Tenacity's Snake creature subtype, it's also a body that can pick up +1/+1 tokens