Following this rule, I have sleeved exactly three* games over the past fifteen years, with one of those three being an exception to the above rule based on experience
Consider the impact of texture
"Pokmon Legends: Z-A Is Coming in 2025
Here are a few categorized ideas: Utility Lands: Command Beacon / Sanctum of Eternity Reliquary Tower Scavenger Grounds / Bojuka Bog (B) Field of the Dead Rogue's Passage / Access Tunnel / Shizo, Death's Storehouse (B) War Room / Bonders' Enclave / Castle Locthwain (B) Emeria, The Sky Ruin (W) / Valakut, the Molten Pinnacle (R) Mystic Sanctuary (U) / Witch's Cottage (B) Hall of the Bandit Lord / Flamekin Village (R) / Hanweir Battlements Meld (R) / Slayers' Stronghold (WR) Hall of Heliod's Generosity (W) / Academy Ruins (U) / Volrath's Stronghold (B) Strip Mine / Wasteland / Dust Bowl / Ghost Quarter Maze of Ith / Mystifying Maze / Labyrinth of Skophos / Kor Haven (W) / Glacial Chasm High Market / Miren, the Moaning Well / Phyrexian Tower (B) Witch's Clinic / Vault of the Archangel (WB) Homeward Path Cavern of Souls / Boseiju, Who Shelters All Thespian's Stage / Vesuva Winding Canyons / Emergence Zone / Alchemist's Refuge (UG) Mikokoro, Center of the Sea / Geier Reach Sanitarium Castle Ardenvale (W) / Kher Keep (R) Castle Vantress (U) / Memorial to Genius (U) / Cephalid Coliseum (U) Inventors' Fair Theme Lands: Karn's Bastion Dark Depths Urza's Power Plant / Urza's Mine / Urza's Tower Sunscorched Desert Windbrisk Heights (W) Idyllic Grange (W) Ghost Town / Oboro, Palace in the Clouds (U) Riptide Laboratory (U) Minamo, School at Water's Edge (U) Tomb Fortress (B) Den of the Bugbear (R) Goblin Burrows (R) Castle Embereth (R) Wirewood Lodge (G) Castle Garenbrig (G) Oran-Rief, the Vastwood (G) / Gavony Township (WG) Mosswort Bridge (G) Kessig Wolf Run (RG) Sunhome, Fortress of the Legion (WR) Grim Backwoods (BG) Ramp Lands: Nykthos, Shrine to Nyx Urza's Saga Cabal Coffers (B) / Cabal Stronghold (B) / Crypt of Agadeem (B) / Lake of the Dead (B) Temple of the False God / Ancient Tomb Myriad Landscape Blighted Woodland (G) / Krosan Verge (WG) Treasure Vault Color-Fixing Lands: Command Tower / Path of Ancestry / Reflecting Pool City of Brass / Mana Confluence / Forbidden Orchard The World Tree (WUBRG) Yavimaya, Cradle of Growth Urborg, Tomb of Yawgmoth There are many more unlisted cards in each category which could fit your specific deck
Holds up to 480 standard size cards
The latter also has the useful benefit of making Eternal Soul live
