Demand, rarity, and card power level all come into play
Even better, that counts any time you cast it from your graveyard, not just using its flashback cost
Advanced Search Sets Random Syntax Release date: 2020-07-22 Karn Liberated Alabaster Mage Ancestral Blade Angel of the Dawn Archangel of Thune Auriok Salvagers Austere Command Avacyn, Angel of Hope Blade Splicer Boon Reflection Council's Judgment Crib Swap Crusader of Odric Ethersworn Canonist Fencing Ace Flickerwisp Fortify Glint-Sleeve Artisan Kemba, Kha Regent Land Tax Leonin Abunas Master Splicer Myrsmith Open the Vaults Path to Exile Puresteel Paladin Remember the Fallen Revoke Existence Sanctum Gargoyle Sanctum Spirit Stoneforge Mystic Stonehewer Giant Strength of Arms Tempered Steel Thraben Inspector Topple the Statue Valor in Akros Valorous Stance Wrath of God Apprentice Wizard Arcum Dagsson Argivian Restoration Braids, Conjurer Adept Brainstorm Cloudreader Sphinx Corridor Monitor Cyclonic Rift Deepglow Skate Esperzoa Faerie Mechanist Force of Will Frogify Grand Architect Hinder Inkwell Leviathan Jace, the Mind Sculptor Master of Etherium Master Transmuter Metallic Rebuke Parasitic Strix Phyrexian Metamorph Pongify Relic Runner Reshape Riddlesmith Rush of Knowledge Sentinel of the Pearl Trident Serra Sphinx Sift Steel Sabotage Thirst for Knowledge Thought Reflection
On top of all that, the spell fails if your opponent has an instant-speed removal spell
Its the true Holy Grail of Pokmon card collecting with only one PSA 10 copy known to exist
Its a mana sink that helps find other legends and sometimes operates like an Overrun for your best creatures
