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Adds to your draw power, and gets you more LOST monsters in the Graveyard to be utilized
Black Lotus is obviously decent too as are all the stupid blue things (Ancestral Recall and Time Walk)

Decklist: Yuriko Ninjutsu in Commander Yuriko, the Tiger's Shadow | Illustration by Yongjae Choi Commander (1) Creatures (29) Baleful Strix Changeling Outcast Dauthi Voidwalker Dimir Infiltrator Dirgur Island Dragon Faerie Seer Fallen Shinobi Gingerbrute Grazilaxx, Illithid Scholar Gudul Lurker Higure, the Still Wind Ingenious Infiltrator Ink-Eyes, Servant of Oni Mist-Cloaked Herald Mist-Syndicate Naga Mistblade Shinobi Ninja of the Deep Hours Okiba-Gang Shinobi Ornithopter Sakashima's Student Satoru, the Infiltrator Silent-Blade Oni Skullsnatcher Slither Blade Tetsuko Umezawa, Fugitive Throat Slitter Tormented Soul Triton Shorestalker Walker of Secret Ways Instants (15) Brainstorm Commit // Memory Counterspell Cyclonic Rift Deadly Rollick Dig Through Time Familiar's Ruse Fierce Guardianship Lim-Dl's Vault Misdirection Murderous Cut Mystical Tutor Negate Swan Song Vampiric Tutor Sorceries (9) Demonic Tutor Devastation Tide Karn's Temporal Sundering Ponder Scheming Symmetry Sea Gate Restoration Temporal Mastery Temporal Trespass Treasure Cruise Enchantments (4) Aqueous Form Arcane Adaptation Cunning Evasion Smoke Shroud Artifacts (8) Arcane Signet Dimir Signet Lightning Greaves Maskwood Nexus Scroll Rack Sensei's Divining Top Sol Ring Talisman of Dominance Lands (34) Access Tunnel Clearwater Pathway Command Tower Dimir Aqueduct Drowned Catacomb Gloomlake Verge Halimar Depths Island x8 Morphic Pool Mystic Sanctuary Polluted Delta Reliquary Tower Rogue's Passage Shipwreck Marsh Sunken Hollow Swamp x9 Temple of Deceit Underground River Watery Grave This is a quick sample list for an average Yuriko, the Tiger's Shadow EDH deck

This makes me like Illusions even more
Here's why: Even page distribution: D-rings hold pages flatter and more evenly, reducing pressure on individual cards