Buy 15 free 2 Guaranteed 1 Legend Booster Dragon Packs.
Each pack give 5 Dragon type pokemons!
Potential Legends/UltraBeasts: Latias, Latios, Rayquaza, Dialga, Palkia, Giratina, Reshiram, Zekrom, Kyurem, Zygarde, Eternatus, Regidrago, Koraidon, Miraidon, Guzzlord, Naganedel.