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.
Hit-Monkey
Ulamog, the Defiler
Sliver Legion
Arwen, Mortal Queen
Bruce Banner // The Incredible Hulk
Barret, Avalanche Leader
The Reality Chip
Kotis, the Fangkeeper
Jodah, the Unifier
Hashaton, Scarab's Fist
Nekusar, the Mindrazer
Kefka, Court Mage // Kefka, Ruler of Ruin
Boromir, Gondor's Hope
Henrika Domnathi // Henrika, Infernal Seer
Golden Argosy
Shattergang Brothers
Urza, Lord High Artificer
Sarulf, Realm Eater
Grizzlegom, Hurloon Hero
Lae'zel, Vlaakith's Champion
Master Chef
Ramirez DePietro, Pillager
Chainer, Dementia Master