Shortly after the prerelease weekend was underway, Wizards did release a brief statement attributing the discrepancy to a regional printing error. The Case of Wyvern: Fallen Empires So first, a little history lesson
Hey there, Illumineers
This is a very powerful deck that takes advantage of the new domain mechanic, combined with a number of dual lands, to summon huge creatures, product a ton of creature tokens, and absolutely overpower your opponent in the mid- to late-game
The Collector Booster Sample Pack that comes included with Commander decks will always have a foil showcase stained-glass uncommon as one of its two cards
Cathars who had fought shoulder to shoulder were at each others throats
If you eventually want to join local store tournaments, you will want to focus your purchases on active Core-legal sets like Whispers in the Well, Winterspell, or Wilds Unknown