Call For Backup's main focus is on those counters, and in Naya (red/green/white), they have access to all the best cards that care about +1/+1 counters
MTG Un-sets also include a lot of funny Easter eggs and in-jokes, making them some of the card game's most entertaining releases

Example Decklist: Imskir Iron-Eater in Commander Imskir Iron-Eater | Illustration by Xavier Ribeiro Commander (1) Planeswalkers (1) Creatures (35) Goblin Engineer Goblin Welder Iron Myr Marionette Apprentice Myr Retriever Leaden Myr Ornithopter of Paradise Ancient Cellarspawn Junk Diver Scrap Trawler Scrap Welder Slobad, Iron Goblin Foundry Inspector Frogmite Jhoira's Familiar Refurbished Familiar Ruthless Technomancer Solemn Simulacrum Karn, Legacy Reforged Goldspan Dragon Mishra, Tamer of Mak Fawa Pyreswipe Hawk Wurmcoil Larva Wurmcoil Engine Frogmyr Enforcer Furnace Hellkite Meteor Golem Myr Enforcer Phyrexian Fleshgorger Sojourner's Companion Threefold Thunderhulk Chiss-Goria, Forge Tyrant Triplicate Titan Metalwork Colossus Mycosynth Golem Instants (5) Deadly Dispute Bedevil Big Score Bottle-Cap Blast Pyretic Rebirth Sorceries (6) Annihilating Glare Hell to Pay Molten Duplication Trash for Treasure Scrap Mastery Their Name Is Death Artifacts (14) Sol Ring Collector's Vault Ichor Wellspring Liquimetal Torque Oni-Cult Anvil Cloud Key Cranial Ram Thran Dynamo Krark-Clan Ironworks Mystic Forge Nettlecyst Demonic Junker Spine of Ish Sah Excalibur, Sword of Eden Lands (38) Mountain x11 Swamp x11 Blazemire Verge Command Tower Darksteel Citadel Dragonskull Summit Drossforge Bridge Great Furnace Haunted Ridge Inventors' Fair Mount Doom Power Depot Scene of the Crime Smoldering Marsh Sulfurous Springs Takenuma, Abandoned Mire Treasure Vault Vault of Whispers With our commander being Imskir Iron-Eater, the main focus of this deck will be getting massive and expensive artifact creatures onto the battlefield

If you find perfect fit sleeves that fit your cards then you should be fine
Current market reality Prices for many of these cards dropped through 2024 and 2025 as supply found buyers and restocks arrived
Earlier this year, we hit a milestone with order 100,000