Niv-Mizzet, Guildpact (Serialized) [Murders at Karlov Manor] Lizrd Beast Set: Phyrexia: All Will Be

Set: Phyrexia: All Will Be One Promos Type: Legendary Creature — Phyrexian Rat Rarity: Rare Cost: {1}{B}{B} Toxic 1 (Players dealt combat damage by this creature also get a poison counter

In a four player game

Set: Throne of Eldraine Type: Sorcery Rarity: Rare Cost: {1}{R}{R}{R} Add seven {R}

it enters the battlefield with a finality counter on it and is a Vampire in addition to its other types

It seems that instead of a will

Niv-Mizzet, Guildpact (Serialized) [Murders at Karlov Manor] Lizrd Beast Set: Phyrexia: All Will BeSet: Murders at Karlov Manor Type: Legendary Creature Dragon Avatar Rarity: Rare Cost: {W}{U}{B}{R}{G} Flying, hexproof from multicolored Whenever Niv Mizzet, Guildpact deals combat damage to a player, it deals X damage to any target, target plater 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.