The Game Of Life

At the beginning of each player's end step,
if 4 or more creatures entered the battlefield
under their control this turn, they sacrifice
each creature did not enter the battlefield this turn.
At the beginning of each player's their end step, if
they control one creature, they sacrifice it, and if
they control three creatures, they create a 1/1 colorless cell creature token.
"You don't educate people by telling them useful things;
you educate people by telling them interesting things."
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