March of the Machine: The Aftermath

Tazri, Stalwart Survivor | Legendary Creature | Human Warrior | Each creature you control has "{T}: Add one mana of any of this creature's colors. Spend this mana only to activate an ability of a creature. Activate only if this creature has another activated ability." {W}{U}{B}{R}{G}, {T}: Mill five cards. Put all creature cards with activated abilities that aren't mana abilities from among the milled cards into your hand. | Manuel Castañón

Arni Metalbrow | Legendary Creature | Human Berserker | Whenever a creature you control attacks or a creature enters the battlefield under your control attacking, you may pay {1}{R}. If you do, you may put a creature card with mana value less than that creature's mana value from your hand onto the battlefield tapped and attacking. | Tyler Jacobson

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

Nahiri's Resolve | Enchantment | | Creatures you control get +1/+0 and have haste. At the beginning of your end step, exile any number of nontoken artifacts and/or creatures you control. Return those cards to the battlefield under their owner's control at the beginning of your next upkeep. | Alexey Kruglov

Pia Nalaar, Consul of Revival | Legendary Creature | Human Artificer | Thopters you control have haste. Whenever you play a land from exile or cast a spell from exile, create a 1/1 colorless Thopter artifact creature token with flying. | Marta Nael

Rocco, Street Chef | Legendary Creature | Elf Druid | At the beginning of your end step, each player exiles the top card of their library. Until your next end step, each player may play the card they exiled this way. Whenever a player plays a land from exile or casts a spell from exile, you put a +1/+1 counter on target creature and create a Food token. (It's an artifact with "{2}, {T}, Sacrifice this artifact: You gain 3 life.") | Bram Sels

Rebuild the City | Sorcery | | Choose target land. Create three tokens that are copies of it, except they're 3/3 creatures in addition to their other types and they have vigilance and menace. (They're affected by summoning sickness.) | Sergey Glushakov

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