Niblis of Frost is a rare Creature — Spirit card from Commander 2020 (C20), collector number 120. Current market price: $0.37, TCGplayer market prices via Scryfall.
Flying Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.) Whenever you cast an instant or sorcery spell, tap target creature an opponent controls. That creature doesn't untap during its controller's next untap step.