Magic the Gathering and others
I doubt Dan Frazier had any real say in how this came about. In the comments on that post, Fraziers agent said that was the case, writing, He did not
You can choose between: Electro, Combat, Dark, Normal, Fire, Psycho, Plant or Water
Within this list, well only be looking at the basic versions of each card from Phyrexia: All Will Be One
Both are overcosted creatures that get cheaper to cast as you fill your yard
For less than the cost of a single booster pack, you can secure a playset of a card that generates massive board value and demands an immediate response from your opponent, or they will quickly be overwhelmed by the constant recursion of threats