From July 26th to August 3rd, Konami and participating partner stores will be holding a “Deck Experience Event” for “Prankids” and “Mayakashi”, two of the new themes from Hidden Summoners.

You’ll be able to choose to play a Half Deck of 20 Cards from either theme to get a feel for them.

Entry cost is free, and participants get Tournament Packs as prizes.

Source

Source 2