Just In Time is an action card costing 3 ink that allows characters of 5 ink or less to be played for free, essentially using two cards instead of one to reduce the ink cost
For this, I can only offer speculation, but Im thinking that the plan was to have instructions inside the wrapper for how to acquire the Pikachu promo card
Three dungeons will be included in Adventures of the Forgotten Realms, all named after existing D&D releases: Tomb of Annihilation, Dungeon of the Mad Mage, and Lost Mine of Phandelver (the location of the D&D starter set)
Might be worth taking a second look at your old cards, you could find something valuable
Anafenza, the Foremost Archive Haunt Bloodchief Ascension Catlike Curiosity Centaur Vinecrasher Compost Countryside Crusher Dennick, Pious Apparition Dimir Strandcatcher Disa the Restless Duskmantle Guildmage Dutiful Knowledge Seeker Forbidden Crypt Lazav, Dimir Mastermind Lorcan, Warlock Collector Nihilith Planar Void Profane Memento Quest for Ancient Secrets Robot Domination Sand Scout Sefris of the Hidden Ways Skola Grovedancer Slogurk, the Overslime Soulcipher Board Syr Konrad, the Grim Tamiyo, the Moon Sage The Dark Barony The Gitrog Monster The Haunt of Hightower Turntimber Sower Ultron the Annihilator Ultron's Auxiliary Voracious Brood Vulturous Zombie Yuma, Proud Protector
Its worth highlighting that not every deck wants land destruction, and its a tempo-negative play unless you wreck the whole board, including creatures and other permanents