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.
NM-Mint Foil - $863.20
Lightly Played Foil - $776.80
Moderately Played Foil - $690.50
Heavily Played Foil - $604.20
Damaged Foil - $431.60
NM-Mint Foil Non English - $863.20
Lightly Played Foil Non English - $776.80
Moderately Played Foil Non English - $690.50
Heavily Played Foil Non English - $604.20
Damaged Foil Non English - $431.60