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.
Near Mint Foil - $236,248.40
Lightly Played Foil - $224,436.00
Moderately Played Foil - $200,811.10
Heavily Played Foil - $177,186.30
Damaged Foil - $165,373.90