Of course, this isnt the only card that can double the triggers of Gallifrey Stands
which can shut down an attacker for one turn, Runestone Caverns, which will provide some card advantage, and the final room, Mad Wizards Lair, which draws you three cards and allows you to cast one for free
Check volume: If only one copy sold in six months, the price is unreliable

Akroma's Vengeance Austere Command Avenge Blood Money Blood on the Snow Bontu's Last Reckoning Breaking Point Catastrophe Ceaseless Conflict Citywide Bust Cleanse Cleansing Nova Cloud's Limit Break Crux of Fate Damnation Damning Verdict Day of Judgment Deadly Cover-Up Deadly Tempest Deadly Vanity Death Begets Life Decree of Annihilation Decree of Pain Depopulate Devastation Do or Die Don't Move Doomskar Dusk // Dawn End Hostilities Endemic Plague Expel the Interlopers Extinction Extinguish All Hope Fated Clash Fated Retribution Fell the Mighty Fight to the Death Final Act Final Showdown Force of Despair Forced March Fumigate Game Over Gaze of the Gorgon Glyph of Doom Glyph of Reincarnation Guan Yu's 1,000-Li March Harsh Mercy Hellfire Hour of Reckoning In Garruk's Wake Jokulhaups Kaya's Wrath Kindred Dominance Kirtar's Wrath Life's Finale Localized Destruction Mandate of Abaddon March of Souls Martial Coup Mass Calcify Mogg Infestation Nature's Ruin Necromantic Selection No Witnesses Obliterate Organic Extinction Overwhelming Forces Path of Peril Perish

I won't talk about the Majestic Dawn -on format in detail, but it had many features that seem impossible today