Double-click to receive a miniature holographic Branded minotaur, axe-wielding destroyer, and a corrupted wolf.
— In-game description
Any player who bought gems prior to the release of Dragon Bash received the mini pack for free, along with the following mail:
The Guild Wars 2 Team
Because you purchased gems through our Gem Store or via a Guild Wars 2 Gem Card between the launch of Guild Wars 2 and June 9, 2013, please enjoy the attached gift from ArenaNet. These minis are available in the Gem Store for a limited time to celebrate Dragon Bash but we wanted you to have a set for free. We really appreciate your continued support!
—The Guild Wars 2 Team
Dragon Bash Mini Pack