And they are highly sought after by collectors and players alike
It plays nicely into what you are trying to do
Cavalier of Thorns Cavalier of Thorns sort of splits the difference between two of greens iconic abilities: ramping your mana base, and returning a card to your library Reclaim-style
It doesn't copy any information about the object that card was before it was put into your graveyard

Take a look at the entire Commander deck below: Creatures (17) 1 Solemn Simulacrum 1 Siege-Gang Commander 1 Emeria Angel 1 Dragonmaster Outcast 1 Myr Battlesphere 1 Jor Kadeen, the Prevailer 1 Mentor of the Meek 1 Goldnight Commander 1 Phantom General 1 Adriana, Captain of the Guard 1 Loyal Apprentice 1 Legion Warboss 1 Silverwing Squadron 1 Harmonious Archon 1 Prava of the Steel Legion 1 Neyali, Suns' Vanguard 1 Otharri, Suns' Glory Planeswalkers (1) Lands (38) Spells (44) 1 Sol Ring 1 Fellwar Stone 1 Loxodon Warhammer 1 Mask of Memory 1 Mind Stone 1 Battle Screech 1 Boros Signet 1 Hour of Reckoning 1 Martial Coup 1 Path to Exile 1 Chain Reaction 1 White Sun's Zenith 1 Intangible Virtue 1 Midnight Haunting 1 Increasing Devotion 1 Boros Charm 1 Assemble the Legion 1 Hordeling Outburst 1 Commander's Sphere 1 Collective Effort 1 Heroic Reinforcements 1 Finale of Glory 1 Generous Gift 1 Talisman of Conviction 1 Arcane Signet 1 Idol of Oblivion 1 Hate Mirage 1 Mace of the Valiant 1 Soul-Guide Lantern 1 Flawless Maneuver 1 Call the Coppercoats 1 Maul of the Skyclaves 1 Felidar Retreat 1 Court of Grace 1 Rip Apart 1 Cut a Deal 1 Staff of the Storyteller 1 Vulshok Factory 1 Roar of Resistance 1 Kemba's Banner 1 Hexplate Wallbreaker 1 Goldwardens' Gambit 1 Glimmer Lens 1 Clever Concealment What do you think of the Rebellion Rising deck

As for the other reprints, there are some good inclusions, such as Living Death, Mutilate, Caged Sun, and Dread Return