Power before Nietzsche was an aspect of the One, for example, in both Islamic and Christian philosophy snd hence orientated to the Good. Its also part of Platos pgikosopgy and before him, Pythagoras.
With Nietzsche it is detached from that, as he denies the One - part of his infamous 'death of God' rhetoric. With that eliminated as well as the notion of the Good, as part of his 'beyond Good and Evil', power simply becomes capricious and this is why Orff in his opus, the Carmina Burana, and which was influenced by Nietzsche speaks of capricious fortune.
I'd say that capricious power is simply tyrannical power. And Nietzsche bows down before that. This would be simply diabolical in the old way of thinking - as well as today, if only peiple would draw out the full implications of what he had to say. In fact, Ronald Beiner, a philosopher who was infatuated with Nietzsche in his youth, in his book, Dangerous Minds, says exactly that and with one eye on todays political climate.