The games when you mill someone and steal a good equipment, a mana rock, or even a bigger creature will be heavily in your favor
There are around 13,590 Beta Uncommons and 48,100 Beta Commons
Then you may return a land card from your graveyard ot the battlefield tapped
One power-doubling spell, like Unnatural Growth or Zopandrel, Hunger Dominus, is all it takes for Ghalta to become a lethal threat
3 Tameshi, Reality Architect Can Recur Both Artifacts And Enchantments Tameshi, Reality Architect is a creature that can return artifacts or enchantments from the graveyard to the battlefield at the cost of one land, one white mana, and X colorless
Rather like how you can try to bait out a board wipe by applying enough pressure that your opponent has to cast it without playing all your creatures, a bit of self-mill can prompt your opponent to crack these before they want to