Vren, the Relentless stops graveyard shenanigans, is hard to remove, and shits out Relentless Rat tokens each turn
Ancient Greece Greek mythology often explored transformation, fate, heroism, and changing identity
From my research, I think a common source of these were the two pack base set and jungle blister: 500487 46.9 KB These were also a common source of 1999-2000 made in USA Base Set Packs
This also applies in reverse to the three Synchro Monsters automatically obtained before the match against Team New World - the player is supposed to not keep the cards and they will disappear if the player exits the Deck Editor with the cards not being in their Extra Deck or Side Deck, but saving a Deck Recipe that has any of those cards will let the player keep them
In other TCG-related news, check out the Ancient Gear Dragon card, the promotional card bundled with the May 2024 V Jump issue
Damage must be contained