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.
Reaper King
Toxrill, the Corrosive
Teysa Karlov
Sarulf, Realm Eater
Adrix and Nev, Twincasters
Bumi, Unleashed
Ultima, Origin of Oblivion
Cosmic Spider-Man
Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight
Lulu, Loyal Hollyphant
Cultist of the Absolute
Alexios, Deimos of Kosmos
Ilharg, the Raze-Boar
Mazirek, Kraul Death Priest
Davros, Dalek Creator
The First Sliver
Venus, Torn Between Worlds