Illithid Harvester {4}{U}
Creature — Horror
Ceremorphosis — When Illithid Harvester enters the battlefield, turn any number of target tapped nontoken creatures face down. They're 2/2 Horror creatures.
4/4
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Plant Tadpoles {X}{U}{U}
Sorcery — Adventure
Tap X target creatures. They don't untap during their controllers' next untap steps. (Then exile this card. You may cast the creature later from exile.)