Niv-Mizzet, Supreme (Showcase) [March of the Machine: The Aftermath] Sidewinder™ and then used that mana

and then used that mana to put large creatures into play

Set: Collectors' Edition Type: Enchantment — Aura Rarity: Common Cost: {W} Enchant creature

flip Rune-Tail

Set: Streets of New Capenna Commander Type: Creature — Kraken Rarity: Rare Cost: {1}{U}{U} Whenever you draw a card

then sacrifices a third of the lands they control

Niv-Mizzet, Supreme (Showcase) [March of the Machine: The Aftermath] Sidewinder™ and then used that manaSet: March of the Machine: The Aftermath Type: Legendary Creature Dragon Avatar Rarity: Rare Cost: {W}{U}{B}{R}{G} 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.)