It teaches the turn structure without complex mechanics
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One extended art rare or mythic, one foil rare or mythic, nine foil commons or uncommons, three "special frame" cards (with borders similar to some of the Mythic Edition cards we'd had in the past), one ancillary card (from a supplemental products like the Planeswalker Decks or Brawl Decks) and one foil token
Later print runs added numbering and shifted to green-backed designs, making the original blue-backed variants prized relics of Pokmons collectible origins
However, past versions of these boxes have typically featured the regular ex cards with a stamp or the regular ex card with alternate art
Then, when you're ready to swing the game, Dina turns a bigger creature into a huge life burst and a pile of +1/+1 counters on your best attacker