Why 5D’s now of all times.

Crest of the Dragon OR Shooting Star Dragon – T.G. Expansion

Each pack contains 10 sleeves. The design is random (packaging is opaque). A maximum of 10 packs will be awarded per person, and participants of the event will be prioritized.

(This is all just in case you later wonder why the price may be staggering when you try to get them online after the event)

Source.