A classic monster many Duelists might remember from the early video games and from the Shonen Jump Championship circuit.
20AP-JP012 Cyber-Stein
This card is included because of its use in early Yu-Gi-Oh! Tournaments for its ability to summon powerful monsters like Blue-Eyes Ultimate Dragon or Cyber End Dragon. More recently in Japan, it’s been used to summon cards like Naturia Exterio to lock down the opponent.
The last time this card was reprinted in Japan was in the 2nd Advanced Tournament Pack for 2014. Unlike other cards in this set, this one has seen plenty of reprints off and on, but this is likely just to keep it fresh in the card pool.