What are the official rulings for Niv-Mizzet, Guildpact?
user
0. A “color pair” is exactly two colors. There are ten color pairs in Magic: white-blue, white-black, blue-black, blue-red, black-red, black-green, red-green, red-white, green-white, and green-blue.
1. The value of X is checked only once, as Niv-Mizzet, Guildpact’s triggered ability resolves.
assistant