In the 4th release of Season 3, this pack includes 10 Boost Gems exclusively for Tekken characters. If you are being the aggressor in a match, as you attack the effects will activate. Note: If you would like to see the effects of the Gems individually before purchase, you can view them in-game from the Gem List within the Store, or from Gem Unit in the Customize menu. This add-on is exclusive content for STREET FIGHTER X TEKKEN. The effects of the Gems may be subject to change.