Vanguard cards remain in the command zone throughout the game
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A slightly different approach, Clever Impersonator can enter the battlefield as a copy of your Lucky Clover instead of copying stuff from it
Competitive players frown upon counterfeit cards, with a ban by WotC in place that can cause a player to be excluded from the competition, or worse still, all future official competitive play

Bloody Asmora | Commander | Stephen Johnson Commander (1) 1 Asmoranomardicadaistinaculdacar Creatures (25) 1 Academy Manufactor 1 Anje, Maid of Dishonor 1 Belligerent Guest 1 Blood Hypnotist 1 Blood Petal Celebrant 1 Bloodcrazed Socialite 1 Bog Naughty 1 Burnished Hart 1 Falkenrath Celebrants 1 Falkenrath Gorger 1 Gluttonous Guest 1 Gray Merchant of Asphodel 1 Iron Myr 1 Leaden Myr 1 Olivia's Attendants 1 Restless Bloodseeker 1 Rune-Scarred Demon 1 Skittering Surveyor 1 Solemn Simulacrum 1 Stromkirk Occultist 1 Tempting Witch 1 Viscera Seer 1 Voldaren Epicure 1 Wandering Archaic 1 Wedding Security Instants (2) 1 Bake into a Pie 1 Vampires' Vengeance Sorceries (17) 1 Act of Treason 1 Bloody Betrayal 1 Cathartic Reunion 1 Claim the Firstborn 1 Gamble 1 Goatnap 1 Hijack 1 Lacerate Flesh 1 Malevolent Whispers 1 Mass Mutiny 1 Mob Rule 1 Pack's Betrayal 1 Pointed Discussion 1 Seize the Spoils 1 Tormenting Voice 1 Traitorous Instinct 1 Vampire's Kiss Enchantments (3) 1 Exquisite Blood 1 Revel in Riches 1 Sanguine Bond I should note that my Cabal Coffers / Urborg, Tomb of Yawgmoth combo would set this deck up to run a card like Torment of Hailfire, but I'm more likely to evolve this list in the direction of running more creatures and throwing in Mortal Combat, Patriarch's Bidding and more vampires

Hedron Crab is certainly the more flexible of the two because you can use it to enable your own graveyard, but both of these cards are fantastic mill engines for 60-card formats