A combo can be any set of cards which effectively ends the game in your favor, be that a prison like Teferi + Knowledge Pool, infinite damage/mill, or even a very fast combat clock like Skithiryx, the Blight Dragon + Lightning Greaves
The steel ink type highlights this particular side of the dashing character with this Into the Inklands card Robin Hood, Champion of Sherwood
Her search has taken her across the Multiverse, even catching her within the machinations of an interplanar war, all without a hint as to her mentor's location
Mark Rosewater broke down the full contents in both his Comic-Con panel and this follow-up article, but heres a brief overview of what you can expect: 1 art card from Zendikar Rising (81 total) 1 basic land card (can be foil) 6 commons and uncommons that are thematically related 1 showcase or other alt-art card 2 wildcards of any rarity 1 rare/mythic rare card 1 foil card 1 token, ad card, or a card from The List The List is a collection of 300 cards from Magic s history that replace the token or ad card in 25% of Zendikar Rising Set Boosters
No, you cant lose the game to mill