The front card shows Wawel dragon.
The Wawel Dragon (Polish: Smok Wawelski), also known as the
Dragon of Wawel Hill, is a famous dragon in Polish legend.
According to the earliest account (13th century), a dragon
(Greek: holophagus, "one who swallows whole") plagued the capital
city of Kraków established by legendary King Krak (or Krakus, Gracchus, etc.).
The man-eating monster was being appeased with a weekly ration of cattle, until
finally being defeated by the king's sons using decoy cows stuffed with sulfur.
But the younger prince ("Krak the younger" or "Krak
junior") murdered his elder brother to take sole credit, and was banished
afterwards. Consequently Princess Wanda had to succeed the kingdom. Later in a
15th-century chronicle, the prince-names were swapped, with the elder as
"Krak junior" and the younger as Lech. It also credited the king
himself with masterminding the carcasses full of sulfur and other reagents. A
yet later chronicler (Marcin Bielski, 1597) credited the stratagem to a cobbler
named Skub (Skuba), adding that the "Dragon's Cave" (Polish: Smocza
Jama) lay beneath Wawel Castle (on Wawel Hill on the bank of the Vistula River).
Source : wiki