Streets of New Capenna

Jetmir, Nexus of Revels | Legendary Creature | Cat Demon | Creatures you control get +1/+0 and have vigilance as long as you control three or more creatures. Creatures you control also get +1/+0 and have trample as long as you control six or more creatures. Creatures you control also get +1/+0 and have double strike as long as you control nine or more creatures. | Ryan Pancoast

Ziatora, the Incinerator | Legendary Creature | Demon Dragon | Flying At the beginning of your end step, you may sacrifice another creature. When you do, Ziatora, the Incinerator deals damage equal to that creature's power to any target and you create three Treasure tokens. | Chris Rahn

Meeting of the Five | Sorcery | | Exile the top ten cards of your library. You may cast spells with exactly three colors from among them this turn. Add {W}{W}{U}{U}{B}{B}{R}{R}{G}{G}. Spend this mana only to cast spells with exactly three colors. | Dominik Mayer