Whenever Niv-Mizzet, Guildpact 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.
![Niv-Mizzet, Guildpact [Murders at Karlov Manor Prerelease Promos]](http://paradoxtcg.com/cdn/shop/files/79234420-4cc0-578a-95c7-6c3b7f446986.png?v=1747249123&width=1445)
