Method 1: The readable playtest card (fastest, least glamorous) If your goal is playtesting, the best custom card is the one your group can understand in three seconds
With the right build, you draw enough fast mana, tutors, and protection to assemble a deterministic win immediately
Eh, Ill cross that bridge when I get to it
Hear me out, non-blink options like Archenemy's Charm and Boomerang Basics can reset your planeswalkers, and O'aka, Traveling Merchant might be designed to make good sagas even better, but works fine with loyalty counters too
Compared to other more impactful black-based Land cards such as Cabal Coffers, Urborg, Tomb of Yawgmoth or Volraths Stronghold, Hive would be often pegged to less importance
Ruthless Regiment isnt far behind