My best one-word answer would be fiat, as in "fiat money", meaning money created simply by the act of it being printed; ergo 'out of nothing'.
fiat: A command or act of will that creates something without or as if without further effort; An authoritative determination : dictate "a fiat of conscience"; An authoritative or arbitrary order : decree "government by fiat"
The origin of the word is from the Latin, as described in the Online Etymology Dictionary:
"authoritative sanction," 1630s, from Latin fiat "let it be done" (also used in the opening of Medieval Latin proclamations and commands), third person singular present subjunctive of fieri, used as passive of facere "to make, do" (see factitious). Also sometimes a reference to fiat lux "let there be light" in the Book of Genesis.
Online Etymology Dictionary. Douglas Harper, Historian. 11 Nov. 2015.