One such card that can be searched out is Thassas Oracle, which can net you a surprise win or two if your foe isnt expecting it
This implies the card is A) old, B) in limited supply, and C) likely to never see an increase in supply

Gonti Scam Gonti, Lord of Luxury | Illustration by Daarken Commander (1) Planeswalkers (3) Liliana, Death's Majesty Lolth, Spider Queen Ob Nixilis Reignited Creatures (27) Author of Shadows Blood Artist Bloodflow Connoisseur Burglar Rat Butcher of Malakir Chain Devil Demon's Disciple Disciple of Bolas Dread Presence Dusk Legion Zealot Fleshbag Marauder Gravelighter Gray Merchant of Asphodel Massacre Girl Merciless Executioner Midnight Reaper Morbid Opportunist Murderous Rider Phyrexian Rager Plaguecrafter Ravenloft Adventurer Ravenous Chupacabra Soldevi Adnate Solemn Simulacrum Virus Beetle Viscera Seer Woe Strider Instants (15) Black Sun's Twilight Defile Fake Your Own Death Hagra Mauling Hostile Negotiations Infernal Grasp Presumed Dead Return to Action Sheoldred's Edict Soul Shatter Supernatural Stamina Undying Evil Undying Malice Village Rites Withering Torment Sorceries (6) Bubbling Muck Corrupt Decree of Pain Feed the Swarm Innocent Blood Sign in Blood Enchantments (5) Arguel's Blood Fast Bastion of Remembrance Cunning Rhetoric Grave Betrayal The Eldest Reborn Artifacts (8) Arcane Signet Charcoal Diamond Coldsteel Heart Conjurer's Closet Everflowing Chalice Fellwar Stone Mind Stone Sol Ring Lands (35) Bojuka Bog Castle Locthwain Midgar, City of Mako Mortuary Mire Swamp x28 Tomb Fortress War Room Witch's Cottage Gonti, Lord of Luxury is hands down one of my favorite card designs

The steep price is thought to have been achieved due to the card's mint condition rated as "MT 10" and the fact it's been signed by artist Christopher Rush, who sadly died back in 2016
New Card: Composer of Spring Exxaxl: This to me seems like one of the strongest new cards printed in CMM
But these counters also represent Domris toughness, so if your opponent attacks Domri and the card suffers damage, you lose one counter for every point of damage sustained