Series 2 sports the next 250 cards of the 2025-26 Upper Deck Base Set. Annually, the Upper Deck Base Set is the most widely-collected Base Set in hockey. It includes 198 veteran cards, 49 Young Guns rookie cards and three checklist cards. The iconic Young Guns are the most anticipated rookie cards of the season.
Each Mass Blaster box includes 4 packs of 12 cards (48 cards in total).
