Once you fulfill a condition, you can turn the card upside down to make that part of the card active. Flip cards havent been revisited with new designs since, and theyve effectively been replaced by the various types of double-faced cards like the popular flip lands
Nicholas Byrds Modern Open-winning version gives us an idea for what might be cut, with only three Pentad Prism (among other cuts, like Laboratory Maniac in the sideboard)
What are your favorite mandatory loop combos
For a clean home setup, aim for 8 players and 24 packs
Some players are even considering this for cEDH play
There are cards that are both threats and answers (such as Teferi, Hero of Dominaria or Sandwurm Convergence), but KernTheGerm gave us this nugget of wisdom: there are no wrong threats, only wrong answers