Some dude recreated the antihydra on Magic: The Gathering at: aesort.com/antihydra, probably: x.com/IsaacKing314/status/1870637729375219740.
It is known that Magic: The Gathering is Turing complete, but it is cool to have a concrete specific example of an open problem in mathematics coded in it.
Screenshot of the Antihydra in Magic: The Gathering construction
. Related: Antihydra in Magic: The Gathering.