Here are the 20 Power Discs shown in this video. My guess is that this is Power Disc Set from Wave 2. The number 20 matches what is on the official Disney Infinity website for Wave 2, and also the number of Abilities (5), Customizations (6), and Toys (9). The only thing that does not match what is on Disney Infinity's website is the Flaming Club toy is listed as series 3 on the website. The Power Discs with stars (*) are from the Toys R Us/EB Games Exclusive List. I believe the Tangled Terrain Disc from Series 1 seen inserted in this book is covering the Frozen Terrain or Sky disc.
(1) Nightmare Before Christmas Sky
(2) Nightmare Before Christmas Terrain
(3) Frankenweenie Sky
(4) Frankenweenie Terrain
(5) Maximus Mount
(6) Mike's Car Mount (*)
(7) Pizza Planet Mount
(8) Stith's Surfboard Mount (*)
(9) Dr. Doofensmirtz Power Up Disc
(10) Peter Pan's Flight Mount (*)
(11) Electric Mayhem Band Bus Mount
(12) Frozen Sky
(13) Frozen Terrain
(14) Wreck-it-Ralph's Melee Strength Power Up Disc
(15) Headless Horseman's Horse Mount
(16) Buzz Lightyear Power Up Disc
(17) Condor Man Wings
(18) Frankenweenie Power Up Disc
(19) Tron Power Up Disc (*)
(20) Flamingo Club
4 out of the 10 Toys R Us/EB Games "Exclusive" Power Discs show up in this album. The missing Power Discs are:
(1) Scrooge McDuck Power Up
(2) Zurg Power Up
(3) Finn McMissile Power Up
(4) Merlin Power Up
(5) Tron Terrain
(6) Tron Sky
According to the Disney Infinity Website, Wave 3 of the Power Discs is supposed to have 4 Abilities, 2 Customizations, and 9 Toys. I speculate that the 6 remaining Toys R Us/EB Games Exclusives could make up the 4 Abilities and 2 Customizations of Wave 3. The Disney Parks Tram Car Power Disc, seen in pictures and videos, could be 1 of the 9 Toy Power Discs.
I wish I knew if all of the Toys R Us/EB Games "Exclusive" Power Discs were going to be released in future waves with future series Power Disc Albums to include those discs. From the information above it looks like they will eventually be in future waves and not really exclusives. I need to make the decision whether or not to buy the Power Disc Album sold everywhere or the exclusive Album from Toys R Us. I cancelled my original preorder for the Power Disc Album available everywhere for the Toys R Us album because I wanted to make sure that I had room for every Power Disc in an album, but now I am back on the fence on which one to get now. Which Power Disc Album is everyone else getting and has your decision changed based on this video? I am leaning towards the available everywhere Power Disc Album now.