The Digimon Card Game Special Booster Version 2.5 [BT19-20] is a comprehensive booster set designed to enhance and diversify your Digimon TCG experience. This set introduces ACE cards, allowing players to strengthen their "Digimon Tamers" decks. Notably, the Mega digivolutions of the three protagonists' partner Digimon, along with "Beelzemon" and "Justimon," receive ACE cards, providing new strategic options. 

Additionally, this booster set marks the debut of Digimon from the "Digimon Xros Wars" manga. Starting with Shoutmon EX6, a pivotal character in the manga, many Digimon like "Luminamon (Nene Ver.)" are introduced to the card game, expanding the roster and offering fresh gameplay dynamics.