Is Niv-Mizzet, Guildpact legal in Standard, Modern, and Commander?

Niv-Mizzet, Guildpact is legal in: Standard, Modern, Pioneer, Legacy, Vintage, Commander, Historic.

Niv-Mizzet, Guildpact

Q: What type of card is Niv-Mizzet, Guildpact?

Niv-Mizzet, Guildpact is a Legendary Creature — Dragon Avatar. Its oracle text reads: "Flying, hexproof from multicolored Whenever Niv-Mizzet deals combat damage to a player, it deals X damage to any target, target player draws X cards, and you gain X life, where X is the number of different color pairs among permanents you control that are exactly two colors. Power/Toughness: 6/6"

Legendary Creature — Dragon Avatar

Flying, hexproof from multicolored

Whenever Niv-Mizzet deals combat damage to a player, it deals X damage to any target, target player draws X cards, and you gain X life, where X is the number of different color pairs among permanents you control that are exactly two colors.

Power/Toughness: 6/6

Set Murders at Karlov Manor

Rarity Rare

Mana Value 5

Artist Chris Rallis

Collector # 220

Scryfall