So to nail one of these, its 1/26 for a specific rare and 1/52 for a specific mythic

Advanced Search Sets Random Syntax Release date: 1996-07-21 Adarkar Valkyrie Boreal Griffin Cover of Winter Darien, King of Kjeldor Field Marshal Gelid Shackles Glacial Plating Jtun Grunt Jtun Owl Keeper Kjeldoran Gargoyle Kjeldoran Javelineer Kjeldoran Outrider Kjeldoran War Cry Luminesce Martyr of Sands Ronom Unicorn Squall Drifter Sun's Bounty Sunscour Surging Sentinels Swift Maneuver Ursine Fylgja Wall of Shards White Shield Crusader Woolly Razorback Adarkar Windform Arcum Dagsson Balduvian Frostwaker Commandeer Controvert Counterbalance Drelnoch Flashfreeze Frost Raptor Frozen Solid Heidar, Rimewind Master Jokulmorder Krovikan Mist Krovikan Whispers Martyr of Frost Perilous Research Rimefeather Owl Rimewind Cryomancer Rimewind Taskmage Ronom Serpent Rune Snag Surging ther Survivor of the Unseen Thermal Flux Vexing Sphinx Balduvian Fallen Chill to the Bone Chilling Shade Deathmark Disciple of Tevesh Szat Feast of Flesh Garza's Assassin Grim Harvest Gristle Grinner Gutless Ghoul Haakon, Stromgald Scourge Herald of Leshrac Krovikan Rot Krovikan Scoundrel Martyr of Bones Phobian Phantasm Phyrexian Etchings Rime Transfusion Rimebound Dead Soul Spike Stromgald Crusader Surging Dementia

I'd urge you to be forgiving with takebacks and to generally play with a goal of having fun
Rescue Rabbit [Secret Rare] RA02-EN008 (YuGiOh 25th Anniversary Rarity Collection II | YuGiOh Cards) prices are based on the historic sales
It makes 0/1 Wizard tokens that ping opponents whenever you cast noncreature spells, which gives you consistent chip damage
Jaws of Defeat is an excellent damage-dealing enchantment, almost like a reverse Warstorm Surge