There are 3 cards that mention Pot of Greed in their text: the Effect Monsters Avatar of The Pot and Spirit of the Pot of Greed, and the Quick-Play Spell Jar Robber
Every box also includes a uniquely crafted duelist coin and a classic paper duel field playmat to ensure players are ready for immediate tabletop action
Blue-Eyes Toon Ultimate Dragon Level 12 LIGHT Dragon / Fusion / Toon / Effect "Blue-Eyes Toon Dragon" + 2 "Toon" monsters Must be Special Summoned (from the Extra Deck) by shuffling the above cards from your hand, field and/or GY into the Deck and/or Extra Deck
During the Main Phase 1 or 2, the turn player can Synchro Summon a Synchro Monster from the Extra Deck by sending monsters they control to the Graveyard (at least 1 Tuner and 1 or more non-Tuner monsters), provided the total Level of those monsters matches exactly the Level of that Synchro Monster
For newcomers, Id highly recommend going back and watching the shows (at the very least check out the original Yu-Gi-Oh!)
Once, during this End Phase, if the number of cards in your hand is more than the number of cards your opponent controls +6, you must randomly shuffle cards from your hand into the Deck so the number in your hand equals the number your opponent controls +6