Since the original card could be worth a lot in value (or sentimental value) many owners will make a proxy card and use that to preserve the original
A reasonable threat that discards a card and can be pitch-cast in an emergency to stop your opponent from comboing off does a lot of work
In multiplayer, people like to run mana creatures as accelerants, but they have issues because they die, inadvertently, to stuff like Earthquake, Mutilate, or Wrath of God
Walk-In Closet // Forgotten Cellar Walk-In Closet // Forgotten Cellar is one part Crucible of Worlds and another part Yawgmoth's Will
Heirloom Blade seems like a great inclusion here that plays nicely with Oketras ability to be put into your deck three cards from the top
Combine that with low draw rates and high PSA values, and you know these are cards that won't depreciate anytime soon