The players must spend one or more currencies to act.

To show this, we use a button that shows the action and the cost of it.

If the player has enough currency to act, the button is regular-colored, and the currency amount text has the currency's primary color and icon. If the action costs more than one currency, the button shows each of the necessary currencies.

If the player does not have enough of one or more of the necessary currencies, the button is greyed out, and the necessary currencies are red.