Gold is currently the easiest and one of the only means by which Legends can be unlocked and made permanently available to the player. Current and future Legends can also be made available in bulk by purchasing the All Legends Pack. Unlike Mammoth coins, gold is earned through gameplay and cannot be purchased with real currency.
A unique cosmetic that can only be purchased with gold are the White and Black character colors, which also have a character level requirement. White requires a character level of 10, and costs 10,000 gold, while Black requires a character level of 25, and costs 25,000 gold. Colors must be purchased separately for each legend.