No, unless stated otherwise in the effect you must at least pay the energy shown next to the cost (one in most cases, but up to four with crossover characters). If no energy type is shown the default minimum is 1 energy of any type.
No, unless stated otherwise in the effect you must at least pay the energy shown next to the cost (one in most cases, but up to four with crossover characters). If no energy type is shown the default minimum is 1 energy of any type.