...Meat, then you will finally battle the next Cipher Admin*, it is Tom Nook, and on his team he has; Spiritomb lv71, Scizor lv70, Abomasnow lv 73, Bibarel lv73, Gastrodon lv74 and a Lumineon (Shadow) lv 75. You MUST snag the Lumineon, or else you won't win the battle. Once you snag it, Tom Nook runs off and the shadow Lumineon is holding an item called a Magical CD, which once you play will open up a portal too...
*The last Cipher Admin you fought, i posted that fight more that 2 years ago lol!!!