These are: Emerald/Steel discard Amethyst/Steel wheel Amber/Steel, Ruby/Steel, and Sapphire/Steel aggro How Emerald/Steel Can Abuse Beyond The Horizon Emerald/Steel discard has been a strong archetype for quite some time, and though it didn't shine as much in set 7, it is bound to be one of the best decks in set 8 thanks to Beyond The Horizon
Edit: Removed Magnemite, Alakazam and Mewtwo at the request of JappaWakka, so he can make changes and improvements to the cards
Grist, the Hunger Tide is a three-mana Black and Green planeswalker that can do a bit of self-mill and make Insect tokens, sacrifice creatures to destroy creatures or planeswalkers, or drain the life from your enemies based on the number of creatures in your graveyard
Please feel free to leave a comment if you have questions or if you disagree with my assessments
Wizards of the Coast provided CBR with a closer look at the Many Faced packet