The Lost Caverns of Ixalan introduced Map tokens, and a new keyword action, very reminiscent of cascade, thats a favorite among many casual and competitive players
Up until now, you only needed your hands and maybe some original cards for reference, but going forward, you may need some tools to help you in the process
Instead, Jungle has the now traditional limited edition, or first edition set, that releases prior to the unlimited set that does not receive the "first edition" stamp on the card
Its ability to generate a large number of Goblins quickly and overwhelm opponents with sheer numbers (exponential goblin growth!) is what makes Krenko, Mob Boss the best goblin commander there is
Plans Plans are a new enchantment subtype coming in Marvel Super Heroes and are considered a Villainous mechanic
Kaalia has other premium copies in circulation, and there will be some division in that regard