As is typical, each Play Booster contains 14 cards, including anywhere between six and nine Commons, four and five Uncommons, and one and four Rares/Mythic Rares
Card #3, Mattimeo, features a printing error - Slagar the Cruel's name is misspelled as "Slager" Card #5, Salamandastron, features a printing error - Ferahgo the Assassin's name is misspelled as "Ferhago" Card #7, The Bellmaker, features a printing error - Finnbarr Galedeep's name is misspelled as "Finnbar" Card #10, The Long Patrol, features a printing error - Tamello De Fformelo Tussock's name is misspelled as "Tamello De Fformello Tussock" Card #13, Lord Brocktree, features a printing error - the word "reeking" is used when it should be "wreaking" Card #14, Taggerung, features a printing error - Deyna's name is misspelled as "Denya" The summary for Card #9, Pearls of Lutra, adds the word "the" before "evil emperor", which was not present in Philomel Series Two, but is present in Philomel Series Three
A card must already be exerted in order to be challenged, meaning you cant challenge characters played on your opponents last turn
This card was given out at the predecessor to the World Championships, referred to as the Tropical Mega Battle
More likely this is being played in the 99 for card selection and Villain synergies, and the Baron does a fine job of that
The deck then features a number of acceleration and mana fixing spells to help cast your allies ahead of curve and generate massive pressure, as well as powerful removal and disruption spells to derail your opponents