Niv-Mizzet, Guildpact (Serialized) [Murders at Karlov Manor]

Cost: W U B R G Flying, hexproof from multicolored
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. true true