Immediately, based on what you taught me about the size of the card, some of the colors, and kind of, like, the plasticky-ness, I'm fairly confident that this one's the real one
Halo Foil Ring-like foil pattern introduced in March of the Machine
They contain the following: 1 traditional foil/foil-etched/Halo foil/Serialized Rare or Mythic Rare Multiverse Legend 1 foil extended-art card or 1 foil planar Booster Fun Rare or Mythic Rare card from the main set (including Serialized Praetors) 1 nonfoil extended art or 1 nonfoil planar Booster Fun Rare or Mythic Rare card 1 nonfoil extended-art Rare or Mythic Rare card from the March of the Machine Commander or Jumpstart sets 1 foil Rare or Mythic Rare 1 foil full-art basic land In addition to the above, players will find an assortment of foil Common and Uncommon cards
Obviously a beefed-up version of the traditional gold Hyper Rare full arts we've seen in the past, this Mega Lucario ex caught the community's collective attention when officially revealed
Every Magic Card Sorted by CMC Mana Value or Converted Mana Cost
Wed seen similar problems before with certain Secret Lair cards, but the fact that these were printed in Standard-legal play boosters amplified the issue