Niv-Mizzet, the Firemind [Champs and States] 50 where X is the number

where X is the number of Islands target opponent controls

and it's returned from the battlefield to its owner's hand at the beginning of the next end step

choose a nonland card name

Set: Heroes of the Realm 2019 Type: Legendary Creature — Merfolk Rogue Rarity: Mythic Cost: {1}{U} Flash

Set: Jungle 1st Edition Type: Water Rarity: Holo Rare Retreat cost: Colorless

Niv-Mizzet, the Firemind [Champs and States] 50 where X is the numberSet: Champs and States Type: Legendary Creature Dragon Wizard Rarity: Rare Cost: {2}{U}{U}{R}{R} Flying Whenever you draw a card, Niv Mizzet, the Firemind deals 1 damage to any target. {T}: Draw a card.