These decks are shared by the community and already available to pick in any game lobby, so there's no need to clone one just to play it. Clone a deck only if you want to customize it or use it as a starting point for building your own.
Kumena, Tyrant of Orazca
Mirko Vosk, Mind Drinker
Timmy, Power Gamer
Koma, World-Eater
Gargantos, the Endbringer
Yuriko, the Tiger's Shadow
Korvold, Fae-Cursed King
Vadrik, Astral Archmage
Ashling, the Limitless
Avacyn, Angel of Horror
The Ur-Dragon
Giada, Font of Hope
Lathliss, Dragon Queen
The Scorpion God
Mary Read and Anne Bonny
Adrix and Nev, Twincasters
Tovolar, Dire Overlord // Tovolar, the Midnight Scourge
Titanbones, Towering Heart
Huatli, Poet of Unity // Roar of the Fifth People
Hylda of the Icy Crown
The Capitoline Triad
Oloro, Ageless Ascetic