Indeed: it is master morality:
“It was the Jews who, with awe-inspiring consistency, dared to invert the aristocratic value-equation (good = noble = powerful = beautiful = happy = beloved of God) and to hang on to this inversion with their teeth, the teeth of the most abysmal hatred (the hatred of impotence), saying “the wretched alone are the good; the poor, impotent, lowly alone are the good; the suffering, deprived, sick, ugly alone are pious, alone are blessed by God, blessedness is for them alone—and you, the powerful and noble, are on the contrary the evil, the cruel, the lustful, the insatiable, the godless to all eternity; and you shall be in all eternity the unblessed, accursed, and damned!”… One knows who inherited this Jewish revaluation…”
[The Genealogy, first treatise, section 7.]
Nietzsche again inverts this inverted value-equation; he again inverts the Natural Order of Rank. The Jews had turned it 180 degrees, had stood truth on its head; Nietzsche turns it another 180 degrees, so that truth is stood on her feet again.
“The order of castes, the supreme, the dominant law, is merely the sanction of a natural order, a natural lawfulness of the first rank, over which no arbitrariness, no “modern idea” has any power. In every healthy society there are three types which condition each other and gravitate differently physiologically; each has its own hygiene, its own field of work, its own sense of perfection and mastery. Nature, not Manu, distinguishes the pre-eminently spiritual ones, those who are pre-eminently strong in muscle and temperament, and those, the third type, who excel neither in one respect nor in the other, the mediocre ones—the last as the great majority, the first as the elite.”
[AC 57.]
These three castes correspond to sattva, rajas, and tamas respectively. Rajas I should like to translate as “will to power”: the warriors are distinguished by the strength of their will to power; the mediocre are distinguished by the weakness of it; and the highest, the Brahmanas [those who represent the deification of power], by the supreme strength of it:
“The erotic fascination inspired by the ascetic issues from his painful attempt to tame the will, a project that paradoxically requires of him a superhuman strength of will”.
[Daniel Conway, Love’s labor’s lost.]