March of the Machine: The Aftermath

Plargg and Nassari | Legendary Creature | Orc Efreet | At the beginning of your upkeep, each player exiles cards from the top of their library until they exile a nonland card. An opponent chooses a nonland card exiled this way. You may cast up to two spells from among the other cards exiled this way without paying their mana costs. | Yigit Koroglu

Niv-Mizzet, Supreme | Legendary Creature | Dragon Avatar | Flying, hexproof from monocolored Each instant and sorcery card in your graveyard that's exactly two colors has jump-start. (You may cast that card from your graveyard by discarding a card in addition to paying its other costs. Then exile it.) | Joshua Raphael