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.
Volrath, the Shapestealer
Treebeard, Gracious Host
Zoyowa Lava-Tongue
Sarkhan, Soul Aflame
Umbris, Fear Manifest
Kelsien, the Plague
Davros, Dalek Creator
Ghave, Guru of Spores
Vishgraz, the Doomhive
Yasova Dragonclaw
Tetzin, Gnome Champion // The Golden-Gear Colossus
Talion, the Kindly Lord
Círdan the Shipwright
Sigarda, Champion of Light
Millicent, Restless Revenant
Torgal, A Fine Hound
Nath of the Gilt-Leaf
Doran, Besieged by Time
Long Feng, Grand Secretariat
Dynaheir, Invoker Adept
Rendmaw, Creaking Nest
Omnath, Locus of the Roil
Hearthhull, the Worldseed
Rootha, Mastering the Moment