Battle Pack 3: Monster League is the fourth Yu-Gi-Oh! TCG booster set designed for booster draft or sealed pack play. It is the first Battle Pack to introduce brand-new cards to the game, and also the first to include a unique Special Rule, increasing the variety of cards that can be used.
Introduces 10 new TCG exclusive cards (2 Monsters, 2 Spells, and 6 Traps).
Uses a Special Tournament Rule: All monsters are treated as all Types.
Introduces a new rarity: Shatterfoil Rare.
Xyz Monsters return after being absent in Battle Pack 2, but are Shatterfoil rarity only.
All Main Deck monsters are Level 4 or lower (with a single exception, "Stegocyber", which even then can be Special Summoned without being Tribute Summoned).