Niv-Mizzet, Parun is a rare Legendary Creature — Dragon Wizard card from Guilds of Ravnica (GRN), collector number 192. Current market price: $5.34 (foil $9.22), TCGplayer market prices via Scryfall.
This spell can't be countered. Flying Whenever you draw a card, Niv-Mizzet deals 1 damage to any target. Whenever a player casts an instant or sorcery spell, you draw a card.