I like to keep this in the sideboard usually, but there is definitely a good argument to be made for playing the Balance main deck, because you often have very few cards in hand
The primary way to perform Fusion Summons in Elemental HERO is by using "Miracle Fusion" to take advantage of the Graveyard and the field to gather the necessary materials to Summon the Fusion Monster for each situation
If youre ahead on elementals, this card can completely lock up a game
Even commodities with clear levels of use-value demand like gasoline, eggs, or palladium fluctuate in price for similar reasons, a combination of demand, investment speculation, and, if not always nostalgia, at least some form of emotional connection to a product that seems stronger than its value in use or consumption
In the case of effect damage, cards such as Dark Room of Nightmare can be employed to boost the damage dealt