Some sleeves are built for intense tournament play, others are intended for inexpensive bulk storage, and perfect-fit sleeves are designed only as the inner layer of a double-sleeved deck
However, like many Magic: The Gathering gods, Sab-Sunen has a limitation on when she can be used in combat

Release date: 2016-11-01 Duelist's Heritage Entrapment Maneuver Orzhov Advokist Selfless Squire Sublime Exhalation Coastal Breach Deepglow Skate Faerie Artisans Grip of Phyresis Manifold Insights Cruel Entertainment Curse of Vengeance Curtains' Call Magus of the Will Parting Thoughts Charging Cinderhorn Divergent Transformations Frenzied Fugue Goblin Spymaster Runehorn Hellkite Benefactor's Draught Evolutionary Escalation Primeval Protector Seeds of Renewal Stonehoof Chieftain Akiri, Line-Slinger Ancient Excavation Atraxa, Praetors' Voice Breya, Etherium Shaper Bruse Tarl, Boorish Herder Grave Upheaval Ikra Shidiqi, the Usurper Ishai, Ojutai Dragonspeaker Kraum, Ludevic's Opus Kydele, Chosen of Kruphix Kynaios and Tiro of Meletis Ludevic, Necro-Alchemist Migratory Route Ravos, Soultender Reyhan, Last of the Abzan Saskia the Unyielding Sidar Kondo of Jamuraa Silas Renn, Seeker Adept Sylvan Reclamation Tana, the Bloodsower Thrasios, Triton Hero Treacherous Terrain Tymna the Weaver Vial Smasher the Fierce Yidris, Maelstrom Wielder Armory Automaton Boompile Conqueror's Flail Crystalline Crawler Prismatic Geoscope Ash Barrens Abzan Falconer Blazing Archon Blind Obedience Brave the Sands Cathars' Crusade Citadel Siege Custodi Soulbinders Dispeller's Capsule Elite Scaleguard Ghostly Prison Hoofprints of the Stag Hushwing Gryff Mentor of the Meek Mirror Entity Oblation Open the Vaults

I have been playing Trading Card Games for more than a decade now
Or, if you have a creature you want to keep, you can opt to not untap Old Man of the Sea to ensure it sticks to your side of the battlefield