Yu-Gi-Oh! 2015 Mega Tins - Rules of Play says:
Every tin contains three 16-card Mega-Packs as well as three promotional cards:
The "Odd-Eyes Pendulum Dragon" Tin contains:- 1 Platinum Secret Rare "Odd-Eyes Pendulum Dragon".
- 2 Super Rare promo cards ("Majesty's Fiend" and "Elder Entity Norden")
- 1 Platinum Secret Rare "Dark Rebellion Xyz Dragon".
- 2 Super Rare promo cards ("Castel, the Skyblaster Musketeer" and "Old Entity Hastorr")
Yu-Gi-Oh! 2015 Mega Tins Review:
Don't just take our word for it! Check out this review of the Yu-Gi-Oh! 2015 Mega Tins.