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://tothetablebgc.myshopify.com/cdn/shop/files/638033c8-649f-4178-bb5b-6c2af0d45675.png?v=1775351028&width=1445)
