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On the front is the atomic symbol "Oh" with an atomic number well past the known, maximum, theoretical limit and an atomic weight to match.
On the back, "As of 2019, there are only 118 known elements. 98 are known to occur naturally. New elements are created by bombarding heavier atoms with lighter atoms to create a new atom with more protons. The theorietical limit is believed to be 173 protons."
(And yes, there's a typo. That makes these limited edition cards. Get them now, for when we get famous later...?)