Mirrym is one of blessed few Dragons who can make a case for being the Commander over The Ur-Dragon (though according to EDHREC, its not really close, around 2x as many decks as Miirym) and Klauth is one of the biggest swings you can do
They were a lot common when I was playing below Diamond
Nox the Lifedrainer Noxel Shroudhaggle Noxious Poison Noxious Trap Nozdormu the Timeless Nozdormu the Timeless One Nozdormu's Presence Nuada Windwalker Numbing Cold Nurgle Tinkfrost Nurture Nurturing Spirit Nuvon Dawnfury Nyala Shadefury Nylaith, Guardian of the Wild Nyn'jah Nyn'jah Nyn'jah's Tabi Boots Oakenclaw Oakenclaw Oathbinder, Charge of the Ranger-General Obfuscate Obliterate Obliterate Obliterate Obliterating Trap Obliveron Obliveron Obora the Mad Obora the Wise Observer's Shield Obsidia Obsidian Colossus Obsidian Drakonid Obsidian Drakonid Obsidian Drudge Obsidian Drudge Obsidian Edged Blade Obsidian Enforcer Obsidian Enforcer Obsidian Pyrewing Obsidian Skyterror Obsidium Cleaver Obsidium Executioner Obsidium Executioner Odo the Blindwatcher Odo's Ley Staff Off the Beaten Path Off With Their Heads
Return all artifact cards from your graveyard to the battlefield
This is one of the largest sets Magic has ever printed, and it has been built for every kind of fan at the table
And Order of the Sacred Torch can be a real annoyance, especially because the decks that care about it can have their removal countered by it