From my experience behind the scenes with Pro Tour testing teams, their Limited specialists want to get to the last milestone and maybe knock out a few stretch goals if they can
While we didnt see them, Chocobos are also confirmed
There are multiple boxes to choose from and more additional ones can be purchased separately, you create it to suit your needs, be it just a normal game session or running a game for your friends, the Explorer will provide all you need.
This was most evident to me this past weekend while playing Ghastly Conscription, allowing me to have any number of creatures that needed to be blocked because nobody could tell which was Icefeather Aven and which was Apex Altisaur
Its a great combo with something that sacrifices an artifact (Krark-Clan Ironworks, perhaps?) and artifacts like Spine of Ish Sah and Portal to Phyrexia that impact the board
Spirit Link or Vampiric Link give your creatures a form of lifelink which can stack with itself or the actual keyword