Well to tell you the truth guys, after opening 6 boosters myself I found a 4-4-3 Salamence line.
There are only about 8 different rares in Dragon. Flygon appears as a holo and a rare, and Vibrava as an uncommon and a rare so in essence he could have gotten a foil Flygon, 2 Rare Flygon, 1 Rare Vibrava, 3 uncommon vibrava, and 4 trapinch quite easily (not to mention reverse foils that in my unspecified amount of boosters I got quite a few duplicates).
on lighter terms, how the heck would he have gotten the cards elsewise?