Golduck´s Encore reads: Choose 1 of the Defending Pokémon´s attacks. That Pokémon can use only that attack during your oppoent´s next turn. There are some attacks, like "Flame Buster" of Magmortar Lv. X which say: "During your next turn, [this Pokémon] can´t use [this attack]". If my opponent attacked which Flame Buster in the last turn, am I allowed to choose Flame Buster for the effect of Encore? If yes, am I right to assume that Magmortar Lv. X would not be allowed to attack at all in the next turn?