"Saturday Morning Cartoons Are Gone, A Nation Weeps"
There are no timing restrictions to boast other than it has to happen after attacking with that creature, and it can only be activated once per turn
Of course, you can't attack if you don't have creatures
At the beginning of the next end step, reveal cards from the top of your library until you reveal that many creature cards, put all creature cards revealed this way onto the battlefield, then shuffle the rest of the revealed cards into your library
Not unlike the manga and anime its based on
Heres what to do materials: White felt cut a rectangle 5.5cm x 17.5cm (if they have a lot of cards and you want to make it hold more increase the 17.5cm measurement for all the pieces) Black felt cut a rectangle 2.5cm x 17.5cm Red felt cut a rectangle 6.5cm x 17.5cm Red felt cut 2 x 8cm x 12.5cm for the internal pockets Black felt cut a circle with a diameter 6.5 cm White felt cut a smaller circle with a diameter of 4.5cm Elastic (0.5cm width) 16cm length Matching thread in white, red and black sewing instructions for the pokemon deck case: General Use a straight stitch and sew about 0.5cm from the raw edge unless specified otherwise